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Academic literature on the topic 'METALLURGICAL INVESTIGATION'

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Published: 11 September 2023

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Journal articles on the topic "METALLURGICAL INVESTIGATION"

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Reitz, W. "Metallurgical investigation into an automotive fire." Journal of Failure Analysis and Prevention 6, no. 2 (April 2006): 20–23. http://dx.doi.org/10.1361/154770206x99280.

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Bhaumik, S. K., T. A. Bhaskaran, R. Rangaraju, M. A. Venkataswamy, M. A. Parameswara, and R. V. Krishnan. "Metallurgical investigation of defective superalloy rings." Engineering Failure Analysis 11, no. 3 (June 2004): 449–62. http://dx.doi.org/10.1016/j.engfailanal.2003.05.019.

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Xiaolei, Xu, and Yu Zhiwei. "Metallurgical investigation on cracked plunger-sleeves." Engineering Failure Analysis 16, no. 5 (July 2009): 1740–48. http://dx.doi.org/10.1016/j.engfailanal.2009.01.001.

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Szumiata, Tadeusz, Marzena Rachwał, Tadeusz Magiera, Katarzyna Brzózka, Małgorzata Gzik-Szumiata, Michał Gawroński, Bogumił Górka, and Joanna Kyzioł-Komosińska. "Iron-containing phases in metallurgical and coke dusts as well as in bog iron ore." Nukleonika 62, no. 2 (June 27, 2017): 187–95. http://dx.doi.org/10.1515/nuka-2017-0029.

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Abstract Several samples of dusts from steel and coke plants (collected mostly with electro filters) were subjected to the investigation of content of mineral phases in their particles. Additionally, sample of bog iron ore and metallurgical slurry was studied. Next, the magnetic susceptibility of all the samples was determined, and investigations of iron-containing phases were performed using transmission Mössbauer spectrometry. The values of mass-specific magnetic susceptibility χ varied in a wide range: from 59 to above 7000 × 10−8 m-3·kg−1. The low values are determined for bog iron ore, metallurgical slurry, and coke dusts. The extremely high χ was obtained for metallurgical dusts. The Mössbauer spectra and X-ray diffraction patterns point to the presence of the following phases containing iron: hematite and oxidized magnetite (in coke and metallurgical dusts as well as metallurgical slurry), traces of magnetite fine grains fraction (in metallurgical dusts), amorphous glassy silicates with paramagnetic Fe3+ and Fe2+ ions, traces of pyrrhotite (in coke dusts), α-Fe and nonstoichiometric wüstite (in metallurgical slurry), as well as ferrihydrite nanoparticles (in bog iron ore). For individual samples of metallurgical dusts, the relative contributions of Fe2+/3+ ions in octahedral B sites and Fe2+ ions in tetrahedral A sites in magnetite spinel structure differs considerably.
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Zivkovic, D., N. Strbac, J. Lamut, B. Andjelic, M. Cocic, M. Steharnik, and A. Mitovski. "Investigation of archaeometallurgical findings from Felix Romuliana locality." Journal of Mining and Metallurgy, Section B: Metallurgy 45, no. 2 (2009): 207–12. http://dx.doi.org/10.2298/jmmb0902207z.

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Remains of metallurgical activities have been discovered recently at the locality Felix Romuliana near Zajecar (Eastern Serbia), with a lot of slag occurrences and metal findings. Samples, taken from this locality, have been investigated using different characterization methods - chemical analysis, XRD and SEM-EDX, in order to clarify the Early Byzantine metallurgical activities at Felix Romuliana.
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Neidel, A., E. Cagliyan, and B. Fischer. "Metallurgical Failure Investigation of Fractured Spring Seals." Practical Metallography 58, no. 8 (August 1, 2021): 539–49. http://dx.doi.org/10.1515/pm-2021-0041.

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Abstract Elastic sealing elements used in combustion chamber assemblies of heavy-duty gas turbine engines used for power generation fractured from high cycle fatigue failure. The subject assembly was burner rig tested in a special testing facility. It was speculated that the affected spring seals likely failed due to forced excitation during burner rig testing, since no material imperfections or fabrication flaws, such as spot weld imperfections, were detected that could have contributed to the failure.
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Vasiltsov, V. S., and M. S. Nysh. "EXPLICATION OF THE INVESTMENT POLICY ESSENCE BY THE CASE OF METALLURGICAL SECTOR COMPLEX." Bulletin of Udmurt University. Series Economics and Law 31, no. 2 (April 20, 2021): 204–14. http://dx.doi.org/10.35634/2412-9593-2021-31-2-204-214.

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The article analyzes multiple definitions of enterprise investment policy. It reveals the scientists’ judgments on the essence of the enterprise investment policy and presents the term definitions integrated with the scientific approach, applying semantic-syntactic criteria in the ontological analysis methodology. In terms of the scientific approaches, suggested by the authors, the objectives of the industrial enterprise investment policy, methods for evaluating the investment policy in general, and the capital investment projects specifically are considered. The authors outline the main problematic issues that require further in-depth research. Differences in the objectives of the investment policy between the enterprises inside the branch, as well as factors of influence on institutional conditions of investment into the metallurgical industry are identified based on the analysis of the strategic profile of the national metallurgical companies and analytical data of the World Steel Association. The authors give the essential criteria of the investment activity efficiency in the field, among which are: fluctuation in world metal prices; the national currency exchange rate volatility; vertical integration in metallurgic enterprise management; oligopoly in the domestic metallurgical market. Approaches, proposed by the authors, are relevant both methodologically and practically, and encourage to further investigation of the enterprise investment policy and investment activity specifics in the metallurgical industry sector.
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Bondarenko, N., and A. Nesterova. "Investigation of the development status and provision with fixed assets of the metallurgical industry of Ukraine." Galic'kij ekonomičnij visnik 70, no. 3 (2021): 178–87. http://dx.doi.org/10.33108/galicianvisnyk_tntu2021.03.178.

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The metallurgical industry is important for Ukraine in strategic perspective, primarily for the development of economic situation of the country, the social sphere, as well as the issue of national security of Ukraine. The metallurgical industry generates more than 30% of GDP, and 40% of foreign exchange earnings in the economy are provided by this industry. However, under modern conditions, domestic metallurgical enterprises are unable to meet the challenges of the global crisis, especially ferrous metals overproduction, falling demand for low-quality metallurgical products, increasing number of competitors in world markets. A separate issue is fixed assets that are the leading factor in the successful operation of the production process. This paper is devoted to the investigation of the development status of metallurgical industry in Ukraine and its provision with fixed assets under modern economic conditions. In particular, the issue concerning the number of economic entities in the field of metallurgical industry of Ukraine and the number of employees at these enterprises and the factors influencing this indicator are highlighted in this paper. The dynamics of metallurgical enterprises sales, the structure of metallurgical production and the structure of foreign trade in terms of the papers of metal products sales are analyzed. Since the state of the metalworking industry can also be considered in terms of the enterprises provision with fixed assets, which maintain stable technological cycle, the rhythm of production and its quality, the essence of the term «fixed assets» is investigated in the scientific literature and indicators of the state and efficiency of fixed assets at the enterprises of Ukraine metalworking industry are analyzed. On the basis of the carried out investigations, we have come to the conclusion that this industry has a number of problems. Particular attention is paid to the reduction of employees number with relatively small fluctuations in the number of business entities in the metallurgical industry, which can cause a shortage of labor resources. In addition, despite the increase in the level of capital and capital efficiency and, consequently, the reduction of capital intensity, the issue of technologically obsolete, and therefore inconsistent with modern conditions of economic activity equipment, remains important at present.
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Li, Zhang, S. L. Gobbi, F. Bonollo, A. Tiziani, and G. Fontana. "Metallurgical investigation of laser welds in wrought Waspaloy." Science and Technology of Welding and Joining 3, no. 1 (February 1998): 1–7. http://dx.doi.org/10.1179/stw.1998.3.1.1.

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Corni, F., C. Nobili, G. Ottaviani, R. Tonini, B. Grignaffini Gregorio, and G. Queirolo. "Metallurgical and electrical investigation of Pt5Ni95/silicon interactions." Applied Surface Science 91, no. 1-4 (October 1995): 107–11. http://dx.doi.org/10.1016/0169-4332(95)00104-2.

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Dissertations / Theses on the topic "METALLURGICAL INVESTIGATION"

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Adolphe, Warren James. "Application of PIV technique for the investigation of flow features within metallurgical vessels." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0002/MQ40981.pdf.

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Ismail, Mohamed. "An investigation into the use of petroleum coke as a substitute for metallurgical coke." Thesis, University of Nottingham, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.663253.

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Metallurgical coke is used primarily as a reducing agent for the reduction of iron in the blast furnace. Due to the high cost, high demand and reduced availability of high quality coking coals used in the production of metallurgical coke, alternative resources are being sought. One possible alternative is to use petroleum coke. Petroleum coke has the advantage of having a higher calorific value than traditional coke, at relatively low cost with a low ash content and ready availability. However the drawback to petroleum coke relates to its poor mechanical strength and reactivity. The main focus of this study was therefore to develop a process for producing petroleum coke with the required qualities for blast furnace application. In an initial series of experiments tests including proximate analysis, ultimate analysis, intrinsic reactivity test, DSC, direct tensile strength, calorific value, X-ray computed tomography, X-ray diffraction and scanning electron microscopy were used to characterise a wide range of petroleum coke and compare it with metallurgical coke properties. X-ray computed tomography methodology was also used to provide 3D information on coke lumps. Results show that none of the petroleum coke samples met the full requirements needed for use as a good blast furnace coke.
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Koo, Hyung-Hoi. "A metallurgical investigation into the friction welding of rapidly-solidified, dispersion-strengthened aluminum alloys /." The Ohio State University, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=osu148775868016277.

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Aldén, Rickard. "Metallurgical investigation in weldability of Aluminium Silicon coated boron steel with different coating thickness." Thesis, KTH, Materialvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171209.

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Hot-pressed aluminium and silicon coated boron steel is used in the car industry where high tensile strength is of great importance, such as in the safety cage of a car where deformation has to be kept to a minimum in case of a collision. After hot-pressing the AlSi-boron steel shows excellent properties with high tensile strength, minimal spring back and also shows good protection against corrosion. A thickness of the AlSi coating of 150 [g/m2] for AlSi coated boron steel is typically used by the car industry today. However the coating thickness would be desirable to be minimized to 80 [g/m2]. Welding of this boron steel with 80 [g/m2]have shown difficulties; and it’s not clear why this occurs. In this report the metallurgical properties of the different coating layers will be investigated, simulations with Thermocalc module Dictra will be used, SEM/EDS will be used to characterize phases in coating layers and correlate to weldability. Resistance spot welding tests will also be performed where the welding parameters of pre-pulse, pulse time, time in between pulses and current will be varied to achieve desirable weld plug diameter without expulsion. Hardness testing in form of micro Vickers will executed. The Materials used will be USIBOR® 1500, AS80 with four different annealing times and one sample of AS150.
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Nosal, P. E. "Metallurgical investigation of hyperbaric welding at pressures to 250-bar for repairs to deep sea pipelines." Thesis, Cranfield University, 2001. http://dspace.lib.cranfield.ac.uk/handle/1826/11029.

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Stella, Piergiorgio. "Powder metallurgy: investigation of metallurgical and technological aspects and potential applications for critical components of turbomachineries." Doctoral thesis, Università degli studi di Trento, 2016. https://hdl.handle.net/11572/369124.

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The application of powder metallurgy (PM) technologies to the manufacturing of Oil & Gas turbomachineries’ components was investigated in the course of research collaboration with the Material and Processes Engineering Department of General Electric Oil & Gas (Italy). The thesis focused on the study of the pressure-assisted Hot Isostatic Pressing technology for the processing of the corrosion resistant Ni-base alloy N07626. The densification behaviour of the N07626 metal powder in condition of pressure assisted sintering was investigated by experiments conducted on a small scale by uniaxial hot pressing condition using a Spark Plasma Sintering (SPS) machine in the aim of extending the result to the initial stage of densification of HIP. The SPS exepriments demonstrated that the densification rate is strongly affected by the process temperature and it is less sensitive to the variation of applied pressure. The microstructure and mechanical properties of full-dense HIPped N07626 alloy, produced according to a fixed proprietary cycle and several experimental deviations were analyzed. The microstructure was studied by Optical Metallography, Scanning Electron Microscopy, Energy Dispersed X-Ray Spectroscopy and Electron Backscatter Diffraction. The mechanical properties of the alloy were assessed by tensile testing, conventional and instrumented Charpy V-Notch testing, JIC fracture toughness tests and fatigue crack growth rate testing. The tensile and impact toughness properties resulted sensitive to the local accumulation of oxygen in Oxygen Affected Zones (OAZs), that leads to a ductile to brittle transition in the impact toughness of the material. Two models for formation of OAZs were proposed based on the phase transformation and the oxidation/reduction reactions taking place in the HIP. The mechanical properties were discussed on the base of the microstructure of the Prior Particle Boundaries (PPBs) interface, focusing of the phase transformation products, represented by a thin layer of submicrometric oxides and carbides. The fracture mode was explained by the analogy with models of ductile micro-mechanisms of void nucleation and coalescence and with fracture models of particulate reinforced metal-matrix-composite. The Charpy impact toughness and the fracture toughness were correlated to the oxygen concentration and to the density of inclusions. The fatigue crack propagation behavior was discussed focusing on the effect of clustering of inclusions on the crack propagation path. A relation between the Paris slope with the impact toughness was found. Finally the increase of processing temperature (HIP and heat treatment) was found significanty beneficial for the toughness. This effect was investigate by grain-size analysis and was proposed to be related to a reduction of density of PPBs inclusions.
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Stella, Piergiorgio. "Powder metallurgy: investigation of metallurgical and technological aspects and potential applications for critical components of turbomachineries." Doctoral thesis, University of Trento, 2016. http://eprints-phd.biblio.unitn.it/1688/1/PhD_tesi_STELLA.pdf.

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The application of powder metallurgy (PM) technologies to the manufacturing of Oil & Gas turbomachineries’ components was investigated in the course of research collaboration with the Material and Processes Engineering Department of General Electric Oil & Gas (Italy). The thesis focused on the study of the pressure-assisted Hot Isostatic Pressing technology for the processing of the corrosion resistant Ni-base alloy N07626. The densification behaviour of the N07626 metal powder in condition of pressure assisted sintering was investigated by experiments conducted on a small scale by uniaxial hot pressing condition using a Spark Plasma Sintering (SPS) machine in the aim of extending the result to the initial stage of densification of HIP. The SPS exepriments demonstrated that the densification rate is strongly affected by the process temperature and it is less sensitive to the variation of applied pressure. The microstructure and mechanical properties of full-dense HIPped N07626 alloy, produced according to a fixed proprietary cycle and several experimental deviations were analyzed. The microstructure was studied by Optical Metallography, Scanning Electron Microscopy, Energy Dispersed X-Ray Spectroscopy and Electron Backscatter Diffraction. The mechanical properties of the alloy were assessed by tensile testing, conventional and instrumented Charpy V-Notch testing, JIC fracture toughness tests and fatigue crack growth rate testing. The tensile and impact toughness properties resulted sensitive to the local accumulation of oxygen in Oxygen Affected Zones (OAZs), that leads to a ductile to brittle transition in the impact toughness of the material. Two models for formation of OAZs were proposed based on the phase transformation and the oxidation/reduction reactions taking place in the HIP. The mechanical properties were discussed on the base of the microstructure of the Prior Particle Boundaries (PPBs) interface, focusing of the phase transformation products, represented by a thin layer of submicrometric oxides and carbides. The fracture mode was explained by the analogy with models of ductile micro-mechanisms of void nucleation and coalescence and with fracture models of particulate reinforced metal-matrix-composite. The Charpy impact toughness and the fracture toughness were correlated to the oxygen concentration and to the density of inclusions. The fatigue crack propagation behavior was discussed focusing on the effect of clustering of inclusions on the crack propagation path. A relation between the Paris slope with the impact toughness was found. Finally the increase of processing temperature (HIP and heat treatment) was found significanty beneficial for the toughness. This effect was investigate by grain-size analysis and was proposed to be related to a reduction of density of PPBs inclusions.
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Heinrich, Glen Sean. "An investigation into the use of froth colour as sensor for metallurgical grade in a copper system." Master's thesis, University of Cape Town, 2003. http://hdl.handle.net/11427/15427.

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Bibliography: leaves 91-92.
In recent years the development of Machine Vision systems has opened up new possibilities for non-intrusive process performance sensors and process control. There are currently various Machine Vision systems on notation plants worldwide (Metso at Kennecott, Frothcam at Escondida). Extensive research has been done on using froth image analysis in closed loop control (Hyotyniemi et aI, 2000; Kittel et aI, 2001; Holtham and Nguyen, 2002; Cipriano et aI, 1998) and recently plants have been using these systems to control the air or level of a flotation cell as a means of controlling mass pull using the froth velocity output. As yet no flotation plants have reported the use of froth colour in their control strategies, however it is well accepted that an experienced operator can judge the metallurgical state of a flotation cell by the appearance of the froth, using colour as a key descriptor of grade, particularly in the case of copper froths. For this reason an investigation was undertaken to evaluate whether a relationship existed between concentrate grade and the froth colour obtained using a Machine Vision system. This relationship could be used to control reagent addition or for system diagnostics. Both would be invaluable tools for the flotation industry. A Machine Vision system called SmartFroth has been developed at University of Cape Town (VCT) as a research tool to investigate the relationships between froth surface indicators and metallurgical parameters. The relationship between froth colour and % solids was also investigated as it was believed that solids loading could be reflected by froth colour. This work was aimed at evaluating the empirical relationship between froth colour and copper grade in the laboratory and then investigating whether a similar relationship existed on plant. Various colour spaces were examined to find one appropriate for the copper flotation froths in order to allow for accurate colour analysis. It also evaluated the use of calibration objects in the colour analysis of flotation froths. This work also evaluated relating froth colour to % solids on plant. Two batch flotation campaigns were done using different ores as well as a preliminary plant trial.
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Garpenquist, Simon, and Carl Erik Sebastian Lindfors. "Practical investigation of mixing phenomena by physical modelling : Scaling criteria applied for bottom gas-stirred water modelling of metallurgical vessels." Thesis, KTH, Materialvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298410.

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Gas stirring is currently the most commonly used method of homogenizing liquid steel in commercial processes. However, due to the harsh environment during the process, physical models built out of e.g. plexiglass have been used to easier understand the complex phenomenon occurring in the process. The models are also used to optimize stirring conditions and estimate mixing times. Instead of liquid steel, water has been used for modelling, to increase safety and reduce costs. The water models are usually scaled down to sizes that are easier to handle. Scaling correctly requires fulfilling commonly used criteria and dimensionless numbers. This report investigated the accuracy of these dimensionless numbers and the relations commonly used for scaling. Existing studies and relations were evaluated, and the theoretically best suitable scaling equations were tested. Three bottom blown vessels were built, in order to test the existing relations. By applying scaling criteria and calculating gas flow rates accordingly, the correlation between theoretical mixing time and measured mixing time could be investigated. This thesis concluded that the correlation between the measured mixing times was not significant, however, by implementing the scale factor λ1/2 a better approximation seems to be given.
Gasomrörning är för tillfället den vanligaste metoden som används för att homogenisera flytande stål i kommersiella processer. På grund av de svåra förhållandena under processen har fysiska modeller, byggda av exempelvis plexiglas, använts. Detta för att enklare förstå de komplexa fenomen som uppstår under processen. Modellerna används också för att optimera omrörningsförhållandena och för att uppskatta blandningstider. Istället för flytande stål har vatten använts vid modellering för att öka säkerheten och minska kostnaderna. Vattenmodellerna är vanligtvis nedskalade till storlekar som är lättare att hantera. En korrekt skalning kräver att vanliga kriterier och dimensionslösa tal uppfylls. Denna rapport undersökte noggrannheten för dessa dimensionslösa tal samt relationer som vanligtvis används vid skalning. Befintliga studier och relationer utvärderades och de teoretiskt mest lämpliga skalningsekvationerna testades. Tre stycken kärl med bottenblåsning byggdes för att testa dessa relationer. Genom att tillämpa skalningskriterier och beräkna gasflödeshastigheterna, kunde korrelationen mellan de teoretiska och uppmätta blandningstiderna undersökas. Denna avhandling drog slutsatsen att korrelationen mellan de uppmätta blandningstiderna inte var signifikant. Dock verkade en bättre approximation fås när skalfaktorn λ1/2 implementerades.
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Ersson, Mikael. "Fundamental Experimental and Numerical Investigation Focusing on the Initial Stage of a Top-Blown Converter Process." Doctoral thesis, KTH, Tillämpad processmetallurgi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9310.

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The aim of this thesis work is to increase the knowledge of phenomena taking place during the initial stage in a top blown converter. The work has been done in a few steps resulting in four different supplements. Water model experiments have been carried out using particle image velocimetry (PIV) technology. The system investigated was a fundamental top blown converter where an air jet was set to impinge on a water surface. The flow field of the combined blown case, where an air jet was introduced through a bottom nozzle, was also captured by the PIV. The work clearly showed that the flow field caused by an impinging top blown jet alone could not match that of the bottom blown case. The main re-circulation loop (or vortex) was investigated with respect to position and it was found that an increased flow rate pushes the center of the re-circulation loop downwards into the bath. However, for the top-blown case there is a point when the flow rate is too large to cause a distinguishable re-circulation loop since the jet becomes more plunging (i.e. penetrates deep into the bath) than impinging, with large surface agitation and splashing as a result.A numerical model with the same dimensions as the experimental system was then created. Three different turbulence models from the same family were tested: standard-, realizable- and a modified-(slight modification of one of the coefficients in order to produce less spreading of the air jet) k-ε turbulence model. It could be shown that for the family of k-ε turbulence models the difference in penetration depth was small and that the values corresponded well to literature data. However, when it comes to the position of the re-circulation loop it was shown that the realizable k-ε model produced better results when comparing the results to the experimental data produced from the PIV measurements, mentioned earlier.It was then shown how the computational fluid dynamics (CFD) model could be coupled to thermodynamics databases in order to solve for both reactions and transport in the system. Instead of an air-water system, a gas-steel-slag system was created using the knowledge obtained in the previous simulation step described above. Reactions between gas-steel, gas-slag, steel-slag and gas-steel-slag were considered. Extrapolation of data from a few seconds of simulation was used for comparison to experimental data from the literature and showed reasonable agreement. The overall conclusion was that it is possible to make a coupling of the Thermo-Calc databases and a CFD software to make dynamic simulations of metallurgical processes such as a top-blown converter.A parametric study was then undertaken where two different steel grades were tested; one with high initial carbon content (3.85 mass-%) and one with lower carbon content (0.5 mass-%). The initial silicon content was held constant at 0.84 mass-%. Different initial temperatures were tested and also some variation in initial dissolved oxygen content was tried. It was found that the rate of decarburization/desiliconization was influenced by the temperature and carbon concentration in the melt, where a high temperature as well as a high carbon concentration favors decarburization over desiliconization. It was also seen that the region affected by a lower concentration of alloys (or impurities) was quite small close to the axis where the impinging jet hits the bath. Add the oscillating nature of the cavity and it was realized that sampling from this region during an experiment might be quite difficult.
QC 20100720
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Books on the topic "METALLURGICAL INVESTIGATION"

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U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Engineering. and Argonne National Laboratory. Materials and Components Technology Division., eds. TMI-2 vessel investigation project (VIP) metallurgical program. Washington, DC: Division of Engineering, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1990.

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W, Bohl Robert, U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Engineering., and Argonne National Laboratory, eds. Peer review of the Three Mile Island unit 2 vessel investigation project metallurgical examinations. Washington, DC: Division of Engineering, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1994.

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B, Ross Robert. Investigating mechanical failures: The metallurgist's approach. London: Chapman & Hall, 1995.

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Ross, Robert B. Investigating mechanical failures: The metallurgists's approach. London: Chapman & Hall, 1995.

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TMI-2 vessel investigation project (VIP) metallurgical program. Washington, DC: Division of Engineering, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1990.

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Diercks, D. R. TMI-2 vessel investigation project (VIP) metallurgical program. Supt. of Docs., U.S. G.P.O. [distributor, 1990.

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Cormick, Craig, ed. Ned Kelly. CSIRO Publishing, 2014. http://dx.doi.org/10.1071/9781486301775.

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Ned Kelly was hanged at the Old Melbourne Gaol on 11 November 1880, and his body buried in the graveyard there. Many stories emerged about his skull being separated and used as a paperweight or trophy, and it was finally put on display at the museum of the Old Melbourne Gaol — until it was stolen in 1978. It wasn’t only Ned Kelly’s skull that went missing. After the closure of the Old Melbourne Gaol in 1929, the remains of deceased prisoners were exhumed and reinterred in mass graves at Pentridge Prison. The exact location of these graves was unknown until 2002, when the bones of prisoners were uncovered at the Pentridge site during redevelopment. This triggered a larger excavation that in 2009 uncovered many more coffins, and led to the return of the skull and a long scientific process to try to identify and reunite Ned Kelly’s remains. But how do you go about analysing and accurately identifying a skeleton and skull that are more than 130 years old? Ned Kelly: Under the Microscope details what was involved in the 20-month scientific process of identifying the remains of Ned Kelly, with chapters on anthropology, odontology, DNA studies, metallurgical analysis of the gang's armour, and archaeological digs at Pentridge Prison and Glenrowan. It also includes medical analysis of Ned's wounds and a chapter on handwriting analysis — that all lead to the final challenging conclusions. Illustrated throughout with photographs taken during the forensic investigation, as well as historical images, the book is supplemented with breakout boxes of detailed but little-known facts about Ned Kelly and the gang to make this riveting story a widely appealing read. Winner of the Collaborative Community Award at the 2015 Victorian Community History Awards.
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Book chapters on the topic "METALLURGICAL INVESTIGATION"

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Danielsen, Hilmar Kjartansson, Somrita Dhar, Carsten Jørn Rasmussen, and Dorte Juul Jensen. "Metallurgical Investigation of Crossing Noses." In Springer Series in Reliability Engineering, 81–91. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-62472-9_5.

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Smith-Hanssen, Nicholas, Gøril Jahrsengene, and Eli Ringdalen. "Biocarbon Materials in Metallurgical Processes—Investigation of Critical Properties." In The Minerals, Metals & Materials Series, 165–77. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-22634-2_16.

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Steinacker, Stephan R., and Juergen Antrekowitsch. "Kinetic Investigation of the Electric Furnace Copper Slag Treatment." In 7th International Symposium on High-Temperature Metallurgical Processing, 101–7. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48093-0_13.

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Basag, Sedef Pinar, Ahmet Turan, and Onuralp Yucel. "An Investigation on Antimony Production by Using Niederschlag Process." In 7th International Symposium on High-Temperature Metallurgical Processing, 117–21. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48093-0_15.

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Steinacker, Stephan R., and Juergen Antrekowitsch. "Kinetic Investigation of The Electric Furnace Copper Slag Treatment." In 7th International Symposium on High-Temperature Metallurgical Processing, 101–7. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119274643.ch13.

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Basag, Sedef Pinar, Ahmet Turan, and Onuralp Yucel. "An Investigation on Antimony Production by Using Niederschlag Process." In 7th International Symposium on High-Temperature Metallurgical Processing, 117–21. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119274643.ch15.

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Liu, Jianhua, Yingwei Li, Lijun Liu, Jinhui Peng, Libo Zhang, Shenghui Guo, Huilong Luo, Hongpo Wang, and Guo Chen. "Investigation on a Microwave High-Temperature Air Heat Exchanger." In 2nd International Symposium on High-Temperature Metallurgical Processing, 119–24. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118062081.ch15.

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Yucel, Onuralp, Mehmet Bugdayci, and Ahmet Turan. "An Investigation on the Self-Propagating High Temperature Synthesis of TiB2." In 5th International Symposium on High-Temperature Metallurgical Processing, 147–51. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118887998.ch19.

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Fan, Xiao-hui, Li-shun Yuan, Min Gan, Wei Lv, Yi Wang, and Xu-ling Chen. "An Investigation on Utilization of Ferrous Scrap by Could-Bonded Pelletizing." In 4th International Symposium on High-Temperature Metallurgical Processing, 579–86. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118663448.ch70.

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Cheng, Gong, Lifeng Zhang, Wenbo Wang, Qiangqiang Wang, and Piotr Roman Scheller. "Investigation on Clogging of Submerged Entry Nozzles for GCr15 Bearing Steels." In 10th International Symposium on High-Temperature Metallurgical Processing, 309–17. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05955-2_29.

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Conference papers on the topic "METALLURGICAL INVESTIGATION"

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Llorca, Fabrice. "Metallurgical Investigation of Dynamic Damage in Tantalum." In SHOCK COMPRESSION OF CONDENSED MATTER - 2003: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter. AIP, 2004. http://dx.doi.org/10.1063/1.1780308.

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Al-Ghadeer, Yousuf, Ali Al-Shawaf, Abduljabbar Khan, and Syed Jainulaudeen Nisthar. "Metallurgical Failure Investigation of Cracked Steam Reformer Tubes." In The 4th World Congress on Mechanical, Chemical, and Material Engineering. Avestia Publishing, 2018. http://dx.doi.org/10.11159/mmme18.120.

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Abdulhadi, E., J.-M. Pelletier, and M. Lambertin. "Metallurgical effects induced by laser cutting: Experimental and theoretical investigation." In ICALEO® ‘97: Proceedings of the Laser Materials Processing Conference. Laser Institute of America, 1997. http://dx.doi.org/10.2351/1.5059642.

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Driscoll, Matthew, Eric McFetridge, Robert Neff, and Peter Descar. "Metallurgical Investigation of LM2500 High Pressure Turbine (HPT) Blade Failures." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68605.

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The General Electric LM2500 gas turbine is utilized as the propulsion engine aboard the Navy’s newest surface combatants including the FFG 7, CG 47 and DDG 51 Class ships. The US Navy owns and operates 450 LM2500 engines. Several instances of high pressure turbine blade failures have required engines to be removed from service and returned to the depot. This paper assesses the reasons for these removals including a shipboard service life assessment of each failure and root cause investigation. Detailed metallurgical findings from two of the Navy’s HPT blade failures are presented and proposed operational risk mitigation strategies are offered for LM2500 engine users.
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Shejale, Girish M., and David Ross. "Failure Investigation of 1st Stage Buckets From Frame 3002, 10 MW Gas Turbine Unit." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-46863.

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The 1st stage buckets in Frame 3002, 10 MW industrial gas turbine experienced premature failures. The buckets failed unexpectedly much earlier than the designed bucket life. Bucket material is Inconel 738, with platinum-aluminized coating on the surface. Failure investigation of the buckets was performed to know the root cause of the failure. The failure investigation primarily comprised of metallurgical investigation. The results of the metallurgical investigation were co-related with the unit operational history. This paper provides an overview of 1st stage buckets investigation. The metallurgical investigation performed concluded prime failure mechanism due to high carbon content of bucket material and improper heat treatment. The bucket coating was initially damaged during the first loading and fracture occurred due to grain boundary embrittlement in short span of service. The metallurgical tests performed included Visual inspection, Scanning Electron Microscopy (SEM), Energy Dispersive Analysis of X-ray (EDS), Chemical analysis, Tensile test and Hardness survey. The test results, discussions and conclusions are presented in this paper.
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Zieris, R., G. Langner, L. M. Berger, S. Nowotny, and E. Beyer. "Investigation of AlSi Coatings Prepared by Laser-Assisted Atmospheric Plasma Spraying of Internal Surfaces of Tubes." In ITSC2004, edited by Basil R. Marple and Christian Moreau. ASM International, 2004. http://dx.doi.org/10.31399/asm.cp.itsc2004p0651.

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Abstract Laser-assisted atmospheric plasma spraying (LAAPS) is a new one-step coating process performed in air whereby the laser beam interacts with the plasma torch at the substrate or coating surface during deposition to generate a coating that is metallurgically bonded to the substrate. This hybrid process was developed in order to combine the specific advantages of APS and laser cladding. In this paper, the development of a hybrid gun for coating internal surfaces of tubes and cylinder bores by LAAPS is presented. The process was optimized for spraying AlSi30 coatings on internal surfaces of aluminum alloy cylinder bores. Single-pass coatings with thicknesses of 300-400 µm and metallurgical bonding to the substrates can be realized by applying an optimized parameter set. The dependence of coating microstructure on spray parameters was investigated by metallographic preparation and optical microscopy. Surface pretreatment must be performed to eliminate the strongly adhering oxide layer on the aluminum alloy substrate and to attain metallurgical bonding of coating to substrate.
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Cole, Kevin D., Martin Reed, Constantine M. Tarawneh, and Brent M. Wilson. "A Metallurgical and Experimental Investigation Into Sources of Warm Bearing Trending." In IEEE/ASME/ASCE 2008 Joint Rail Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/jrc2008-63028.

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In the railroad industry, bearing hot-box detectors are the primary tools utilized for the removal of distressed bearings from service. Current technology has expanded the role of these detectors to monitor bearings that appear to “warm trend” relative to the average temperatures of the remainder of bearings on the train. Several bearings set-out for trending and classified as non-verified revealed that a common feature was discoloration of rollers within a cone assembly. A number of laboratory tests were performed to determine a minimum temperature and environment needed to reproduce these discolorations. In addition, a metallurgical examination concluded that microhardness profiles from discolored rollers exhibited evidence of heating, which lead to softening of the case microstructure, and a reduction in case depth. In order to determine a cause for the internal heat leading to the discoloration of rollers, selected laboratory experiments were carried out in a simulated service environment. Testing focused on exploring certain defects or hypothetical scenarios that may raise the bearing cup temperature above that of normal operating conditions. None of the examined cases resulted in similar roller discolorations to those observed in the trended set-outs. The studies presented in this paper comprise the initial work aimed at determining the root cause of warm bearing trending that some tapered roller bearings experience during service.
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Chen, Chaoyue, Yingchun Xie, Xinliang Xie, Sihao Deng, Hanlin Liao, Renzhong Huang, and Zhongming Ren. "Investigation of Particle/Substrate Bonding Between Copper Powder and Different Substrates in Cold Spray." In ITSC2018, edited by F. Azarmi, K. Balani, H. Li, T. Eden, K. Shinoda, T. Hussain, F. L. Toma, Y. C. Lau, and J. Veilleux. ASM International, 2018. http://dx.doi.org/10.31399/asm.cp.itsc2018p0262.

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Abstract In this work, the bonding mechanism between Cu particle and substrates of Mg, Cu and stainless Steel (SS) was investigated by the direct observation of bonding interface on detached particle and substrate crater. In the cases of Cu/Cu and Cu/SS, dimple-like fractures were found on the detached Cu particle and substrate crater for the first time. Accompanying with EDS line scan and mapping results, such dimple fractures can be considered as the signs of strong metallurgical bonding. However, the bonding interface in case of Cu/Mg is smooth without signs of metallurgical bonding. Finite element analysis results revealed a ring of high contact pressure zone on the surface of particle and substrate, which is exactly the place where metallurgical bonding was observed. It can suggest that the high contact pressure zone is the dominant factor for the formation of metallurgical bonding on the oxide-free interface. The evolution of maximum contact pressure in different cases shows that the substrate hardness plays an important role during the single particle bonding. The present study provides a profound insight into the bonding mechanism of a single cold sprayed particle, which can give the guidance to the full deposition of cold sprayed coating.
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Slogar, Gerrick, Gary Prus, and Benjamin Canilang. "ETF40B 3rd Vane Field Investigation: Root Cause and Corrective Action." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-94449.

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Results from an engineering investigation, including findings, root cause and corrective action of an ETF40B compressor incident, are presented in this paper. Vericor’s ETF40B is used to power US NAVY Landing Craft Air Cushion (LCAC) vehicles that have undergone the Service Life Extension Program (SLEP). This paper discusses the initial review of an engine incident, the results of the engineering investigation that led to identifying root cause and the successful validation testing providing fleet corrective action. This paper will present the history of the investigation, the metallurgical analysis findings, the results of finite element stress analysis and investigative testing performed on the vane. The paper will conclude with the testing conducted to verify the design solution and how the final field and production compressor changes were incorporated.
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Madison, Daniel P., Scott A. Miers, Glen L. Barna, and Jay L. Richerson. "Comparison of Piston Temperature Measurement Methods: Templugs Versus Wireless Telemetry With Thermocouples." In ASME 2012 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/icef2012-92184.

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The objective of this investigation was to compare the results of metallurgical temperature sensors and thermocouples when used to measure piston temperatures in a running engine. Type J thermocouples and a microwave wireless telemetry system were used to gather real time temperature data on the piston in the vicinity of each metallurgical sensor. Eight pairs of metallurgical temperature sensors were installed in the piston with a thermocouple junction in-between. The engine was ramped up to steady state quickly and then held for approximately four hours at 1800 RPM and 1980 N-m before being quickly ramped back down in accordance with the metallurgical sensors’ recommended test cycle. During the test, continuous temperature data at each of the sensor locations was monitored and recorded using the telemetry system. After the test was complete, the metallurgical temperature sensors were removed and independently analyzed. The results indicate that readings from the metallurgical temperature sensors were similar to those of the embedded thermocouples for locations without large thermal gradients. However, when thermal gradients were present, the metallurgical sensor’s reading was influenced measurably.
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Reports on the topic "METALLURGICAL INVESTIGATION"

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Alexander, D. Metallurgical investigation of material from chill-water piping system. Office of Scientific and Technical Information (OSTI), February 1990. http://dx.doi.org/10.2172/7198799.

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Bohl, R. W., R. G. Gaydos, G. F. Vander Voort, and D. R. Diercks. Peer review of the Three Mile Island Unit 2 Vessel Investigation Project metallurgical examinations. Office of Scientific and Technical Information (OSTI), July 1994. http://dx.doi.org/10.2172/10173981.

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Cialone and Williams. L51589 Investigation of Sulfide-Stress Cracking at Pipe Seam Welds. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), August 1989. http://dx.doi.org/10.55274/r0010331.

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A metallurgical investigation was undertaken to identify the factors that are responsible for sensitivity to sulfide-stress cracking (SSC) in the heat-affected zone (HAZ) of microalloyed high-strength line-pipe steels, when the HAZ does not contain regions of high hardness. Sustained-load tests were conducted in the NACE laboratory sour-gas environment to determine the regions in which SSC initiated, and thereby to identify which regions were most sensitive to SSC.
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Ricker, R. E., D. J. Pitchure, M. E. Williams, and S. A. Claggett. Metallurgical Investigations into Corrosion Damage in Homes Constructed with Problem Drywall. Gaithersburg, MD: National Institute of Standards and Technology, August 2011. http://dx.doi.org/10.6028/nist.ir.7809.

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Unknown, Author. L52043 SCC Initiation Susceptibility Ranking-Screening. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), September 2005. http://dx.doi.org/10.55274/r0011149.

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The objectives of this project were: To increase the understanding of the metallurgical factors controlling low pH SCC initiation and crack propagation; To extend and enlarge the pool of test data relating to linepipe low-pH SCC susceptibility and to generate data to enable comparison of European and North American materials; and To further verify the standardised test procedures developed by EPRG for investigating crack initiation and crack propagation.
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