Готові списки джерел за темами / Mild steel Stress corrosion

Добірка наукової літератури з теми "Mild steel Stress corrosion"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 28 січня 2023

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Статті в журналах з теми "Mild steel Stress corrosion"

1

Fayomi, Ojo Sunday Isaac, J. Akpoborie, Omotayo Sanni, J. Ren, Wan B. Wan Nik, J. A. Oyebanji, K. M. Oluwasegun, J. O. Ojediran, and F. Zulkifli. "Stress Corrosion Cracking and the Effects of <i>Citrus x aurantiifolia</i> on Mild Steel - A Green Approach." Key Engineering Materials 917 (April 13, 2022): 116–34. http://dx.doi.org/10.4028/p-2ok39h.

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The inhibition performance of citrus x aurantiifolia extract (CXA) on the corrosion of mild steel in 1.5 M H2SO4, 2 M H2SO4, 3 M H2SO4, and 4 M H2SO4 solutions was evaluated by weight loss, potentiodynamic polarization techniques, and scanning electron spectroscopy equipped with energy-dispersive X-ray spectroscopy. CXA inhibited the mild steel corrosion in the sulphuric acid solutionswith optimal inhibition results of 96.06% in 1.5 M H2SO4 and 86.57% in 4 M H2SO4 from weight loss measurement. Weight loss, potentiodynamic polarization, and scanning electron microscopy tests confirm the inhibitive performance of this compound and the increase in inhibitor efficiency increases with inhibitor concentration. The polarization data showed that the inhibitor acts as a mixed-type inhibitor, and fits the Langmuir adsorption isotherm. The adsorption studies clarify the excellent adsorption of this compound on the mild steel surface. The inhibited steel in the acid solution displayed improved surface morphology due to the surface protection effect of CXA molecules. The citrus x aurantiifolia studied here easily mitigates the effect of stress corrosion cracking on mild steel in a sulphuric acid environment. Keywords: Mild steel, Stress corrosion, Adsorption, Corrosion inhibitor, Sulphuric acid, Citrus X Aurantiifolia
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2

SATO, Eiji, and Tomomi MURATA. "Stress Corrosion Cracking of Mild Steel in Coal Gas Liquid." Tetsu-to-Hagane 72, no. 7 (1986): 847–54. http://dx.doi.org/10.2355/tetsutohagane1955.72.7_847.

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Le, Li, Massoud Sofi, and Elisa Lumantarna. "The combined effect of stress and corrosion on mild steel." Journal of Constructional Steel Research 185 (October 2021): 106805. http://dx.doi.org/10.1016/j.jcsr.2021.106805.

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4

Chu, W. Y., R. T. Ma, and C. M. Hsiao. "Technical Note:Stress Corrosion Cracking of Mild Steel under Compressive Stress." CORROSION 43, no. 4 (April 1987): 251–54. http://dx.doi.org/10.5006/1.3583145.

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Conor, P. C. "Crack Closure and Stress Corrosion Fracture Thresholds in Mild Steel." CORROSION 43, no. 10 (October 1987): 614–21. http://dx.doi.org/10.5006/1.3583839.

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Parkins, R. N. "The intergranular corrosion and stress corrosion cracking of mild steel in clarke's solution." Corrosion Science 36, no. 12 (December 1994): 2097–110. http://dx.doi.org/10.1016/0010-938x(94)90009-4.

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Parkins, R. N., and R. Usher. "the stress-corrosion cracking of mild steel in coal gas liquors." Journal of Applied Chemistry 9, no. 9 (May 4, 2007): 445–56. http://dx.doi.org/10.1002/jctb.5010090901.

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Smart, N. R., P. M. Scott, and R. P. M. Procter. "Repassivation kinetics and stress corrosion of mild steel in phosphate solutions." Corrosion Science 30, no. 8-9 (January 1990): 877–901. http://dx.doi.org/10.1016/0010-938x(90)90011-s.

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Li, Le, Chun-Qing Li, and Mojtaba Mahmoodian. "Effect of Applied Stress on Corrosion and Mechanical Properties of Mild Steel." Journal of Materials in Civil Engineering 31, no. 2 (February 2019): 04018375. http://dx.doi.org/10.1061/(asce)mt.1943-5533.0002594.

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Forsyth, Maria, Marianne Seter, Bruce Hinton, Glen Deacon, and Peter Junk. "New 'Green' Corrosion Inhibitors Based on Rare Earth Compounds." Australian Journal of Chemistry 64, no. 6 (2011): 812. http://dx.doi.org/10.1071/ch11092.

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A series of rare earth organic compounds pioneered by our group have been shown to provide a viable alternative to the use of chromates as corrosion inhibitors for some steel and aluminium applications. For example we have shown that the lanthanum 4-hydroxy cinnamate offers excellent corrosion mitigation for mild steel in aqueous environments while rare earth diphenyl phosphates offer the best protection in the case of aluminium alloys. In both cases the protection appears to be related to the formation of a nanometre thick interphase occurring on the surface that reduces the electrochemical processes leading to metal loss or pitting. Very recent work has indicated that we may even be able to address the challenging issue of stress corrosion cracking of high strength steels. Furthermore, filiform corrosion can be suppressed when selected rare earth inhibitor compounds are added as pigments to a polymer coating. There is little doubt from the work thus far that a synergy exists between the rare earth and organic inhibitor components in these novel compounds. This paper reviews some of the published research conducted by the senior author and colleagues over the past 10 years in this developing field of green corrosion inhibitors.
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Дисертації з теми "Mild steel Stress corrosion"

1

Prieto, Nieto Claudia L. "Mechanical Characteristics and Adherence of Corrosion Products on Mild Steel." Ohio University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1574678745737727.

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Tran, Thu N. B. "Corrosion Mechanisms of Mild Steel in Weak Acids." Ohio University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1400078277.

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Navabzadeh, Esmaeely Saba. "Galvanic Localized Corrosion of Mild Steel under Iron Sulfide Corrosion Product Layers." Ohio University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou151551709542735.

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4

Abdul-Salam, Ezzet Hameed. "Fatigue crack propagation in mild steel." Thesis, University of Salford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.291749.

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Wang, Shufan. "Effect of Oxygen on CO2 Corrosion of Mild Steel." Ohio University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1235976914.

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Wang, Shufan. "Effect of oxygen and CO₂ corrosion of mild steel." Ohio : Ohio University, 2009. http://www.ohiolink.edu/etd/view.cgi?ohiou1235976914.

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7

Cheung, Chin Wa Sunny. "Biofilms of marine sulphate-reducing bacteria on mild steel." Thesis, University of Portsmouth, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241657.

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8

Rihan, Rihan Omar. "Erosion-corrosion of mild steel in caustic and inhibited acid solution /." [St. Lucia, Qld.], 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16325.pdf.

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Brown, Bruce N. "The Influence of Sulfides on Localized Corrosion of Mild Steel." Ohio University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1386325647.

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10

Yang, Yuan Feng. "Calcium and magnesium containing anti-corrosion films on mild steel." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/calcium-and-magnesium-containing-anticorrosion-films-on-mild-steel(34a7b76f-8ba6-49a7-a1fa-d87f52dc230f).html.

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Under normal conditions, cathodically protected mild steel in seawater is protected by a precipitated film of calcium carbonate and magnesium hydroxide, the so-called calcareous film. This study has attempted to investigate the dynamics of calcareous deposit formation during cathodic protection and the composition of calcareous deposits formed under different applied current densities, and also the role played by the initial current density in forming a good quality calcareous deposit. In addition, an under protection situation can occur where current demand values are under estimated, or where structures are approaching the end of their design lives. In these conditions, a calcareous film might well occur but complete protection is probably not possible. These situations have also been studied. At low insufficient current densities where steel corrosion is still occurring, a clear correlation exists between the iron containing corrosion product and the overlaying magnesium hydroxide layer. Such effects have also been investigated using pH titration analysis, where the effect of co-precipitation of the iron and magnesium oxides/hydroxides has been shown. At higher current densities a layered precipitate has been shown to occur consisting of an inner magnesium containing layer and an outer calcium containing layer. At obvious overprotection current densities, the mechanical stresses involved in hydrogen evolution are assumed to give rise to film cracking. To augment and compliment the study on calcareous calcium/magnesium films formed during cathodic protection, a calcium-magnesium containing pigment has also been investigated in aqueous solutions at open circuit as a possible corrosion inhibitor. Another study looked at the same inhibitor in conjunction with a sacrificial zinc anode. Very effective inhibition has been shown with the film containing not only magnesium, calcium and phosphorous but also zinc. In all the investigations electrochemical methods have been used together with various surface analytical techniques.
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Книги з теми "Mild steel Stress corrosion"

1

Cross, D. M. Phosphonate inhibition of mild steel corrosion. Manchester: UMIST, 1996.

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2

Al-Qhatani, Mohsen. Corrosion of mild steel by metal dusting. Manchester: UMIST, 2000.

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3

El-Rageai, Omar Mohamed. Inhibition by suberate of mild steel corrosion. Manchester: UMIST, 1998.

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4

Aswaiyah, Ali Omar. Inhibition by azelate of mild steel corrosion. Manchester: UMIST, 1998.

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5

Betancourt, L. F. Effect of organic acids in CO2 corrosion of mild steel. Manchester: UMIST, 1995.

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6

Anderson, Stuart B. Microbiologically influenced corrosion of mild steel by sulphate-reducing bacteria. Manchester: UMIST, 1996.

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7

Wahab, H. Abdul. Inhibition of zinc-nitrilotrismethylenephosphonic acid of the corrosion of mild steel. Manchester: UMIST, 1997.

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8

Snowden, M. E. Studies of corrosion inhibitors for the conservation of mild steel artefacts. Portsmouth: University of Portsmouth, School of Pharmacy and Biomedical Sciences, 2001.

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9

Petrov, L. N. Korrozii͡a︡ pod napri͡a︡zheniem. Kiev: Gol. izd-vo izdatelʹskogo obʺedinenii͡a︡ "Vyshcha shkola,", 1986.

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10

Litawati. Effect of chloride on inhibition by decanoic on corrosion of mild steel. Manchester: UMIST, 1998.

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Частини книг з теми "Mild steel Stress corrosion"

1

Nešić, S. "Carbon Dioxide Corrosion of Mild Steel." In Uhlig's Corrosion Handbook, 229–45. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9780470872864.ch19.

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2

Fonseca, I. T. E., A. R. Lino, and V. L. Rainha. "Biocorrosion of Mild Steel by Sulphate Reducing Bacteria." In Microbial Corrosion, 188–97. London: CRC Press, 2022. http://dx.doi.org/10.1201/9780367814106-16.

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3

Gismelseed, Abbasher, S. H. Al-Harthi, M. Elzain, A. D. Al-Rawas, A. Yousif, S. Al-Saadi, I. Al-Omari, H. Widatallah, and K. Bouziane. "Atmospheric corrosion of mild steel in Oman." In ICAME 2005, 753–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/978-3-540-49853-7_8.

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4

Waanders, F. B., S. W. Vorster, and A. J. Geldenhuys. "Biopolymer Corrosion Inhibition of Mild Steel: Electrochemical/Mössbauer Results." In Industrial Applications of the Mössbauer Effect, 133–39. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0299-8_14.

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Basukumar, H. K., and K. V. Arun. "Stress Corrosion Cracking Behavior of Spring Steel in Aggressive Corrosion Environment." In Springer Proceedings in Materials, 67–76. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-7554-6_5.

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6

Afolabi, Ayo Samuel, Anthony Chikere Ogazi, and Feyisayo Victoria Adams. "Impact of Some Agro Fluids on Corrosion Resistance of Mild Steel." In Transactions on Engineering Technologies, 431–44. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-7236-5_31.

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7

Kane, Russell D. "Stress Corrosion Cracking of Steel Equipment in Ethanol Service." In Oil and Gas Pipelines, 353–62. Hoboken, New Jersey: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119019213.ch25.

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Cattant, François. "Rupture and Stress Corrosion Cracking of Martensitic Stainless Steel." In Materials Ageing in Light-Water Reactors, 1107–42. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-85600-7_10.

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Waanders, F. B., S. W. Vorster, and G. J. Olivier. "Corrosion Products Formed on Mild Steel Samples Submerged in Various Aqueous Solutions." In Industrial Applications of the Mössbauer Effect, 239–44. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0299-8_25.

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10

Ezekiel, S. N., A. A. Ayoola, B. M. Durodola, O. Odunlami, and O. A. Oyeniyi. "Phosphating Technique: A Reliable Approach for Corrosion Resistance of A36 Mild Steel." In Green Energy and Technology, 185–96. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-95820-6_16.

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Тези доповідей конференцій з теми "Mild steel Stress corrosion"

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Jiang, Xiaoli, and C. Guedes Soares. "Residual Strength of Pitted Mild Steel Plates Subjected to Biaxial Compression." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54243.

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Анотація:
The present paper focus on the residual strength of pitted mild steel rectangular plate under biaxial compression. This paper aims to propose a general and practical formula to predict the residual strength of pitted rectangular plates under biaxial compression starting from the classic formula for intact rectangular plates and assessing whether it can be applicable to pitted plates, where the degree of pitting corrosion is modelled as one key parameter. Firstly, the numerical model is verified with an existing case study. Afterwards, a series of nonlinear FEM analysis are performed, changing geometrical attributes of both pits and plates, i.e., the radius and location of pits and the slenderness of plates. Based on those simulation results, it is found that the classic formula for intact rectangular plates can be applied reasonably well for pitting corroded plates. A unique parameter DOP (degree of pitting), which is easily determined, is employed to evaluate the effect of pitting corrosion with adequately accuracy and without bias to either longitudinal or transverse compressive stress. The proposed formula can provide guidance during the process of ship structural maintenance decision-making and strength reassessment conveniently.
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2

Singh, Gurdeep, and Gurinder Singh Brar. "An Experimental and Numerical Investigation of Residual Stresses in Butt Welding of Two Mild Steel Plates." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57024.

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Welding is a reliable and efficient joining process in which the coalescence of metals is achieved by fusion. Welding is carried out with a very complex thermal cycle which results in irreversible elastic-plastic deformation and residual stresses in and around fusion zone and heat affected zone (HAZ). A residual stress due to welding arises from the differential heating of the plates due to the weld heat source. Residual stresses may be an advantage or disadvantage in structural components depending on their nature and magnitude. The beneficial effect of these compressive stresses have been widely used in industry as these are believed to increase fatigue strength of the component and reduce stress corrosion cracking and brittle fracture. But due to the presence of residual stresses in and around the weld zone the strength and life of the component is also reduced. To understand the behavior of residual stresses, two 10 mm thick Fe410WC mild steel plates are butt welded using the Metal Active Gas (MAG) process. An experimental method (X-ray diffraction) and numerical analysis (finite element analysis) are carried out to calculate the residual stress values in the welded plates. A three-pass V-butt weld joint is considered in this study. In multi-pass welding operation the residual stress pattern developed in the material changes with each weld pass. In X-ray diffraction method, the residual stresses were derived from the elastic strain measurements using a Young’s modulus value of 210 GPa and Poisson’s ratio of 0.3. Finite element method based, SolidWorks Simulation software is used to develop a coupled thermal-mechanical three dimension finite element model. The finite element model was evaluated for the transient temperatures and residual stresses during welding. Also variations of the physical and mechanical properties of material with the temperature were taken into account. It can also be concluded that when temperature distribution increases then the residual stress in the weldment also increase. The results obtained by finite element method agree well with those from experimental X-ray diffraction method.
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3

Hoche, Holger. "Development of PVD-Coatings for the Corrosion Protection of Mild Steel Substrates for Applications under Complex Tribological and Corrosive Stresses." In 61st Society of Vacuum Coaters Annual Technical Conference. Society of Vacuum Coaters, 2018. http://dx.doi.org/10.14332/svc18.proc.0027.

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4

Wang, Shidong, Lyndon Lamborn, Karina Chevil, Erwin Gamboa, and Weixing Chen. "Dense and Sparse Stress Corrosion Crack Initiation in an X65 Pipeline Steel With Mill Scale." In 2020 13th International Pipeline Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/ipc2020-9510.

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Abstract Near-neutral pH stress corrosion cracking (SCC) is a significant threat to the operational safety and reliability of gas and oil pipelines. The SCC cracks are typically formed in colonies with different crack density populations on the external surface of the pipe. The density of SCC cracks affect how pipeline integrity and remaining lifetime are assessed. Although sparse and dense crack colonies are commonly observed on pipelines, it has not been well established how these crack colonies with different crack populations were developed in the field. This research was made in an attempt to replicate near-neutral pH SCC cracks with different crack densities in the laboratory with realistic loading conditions commonly found during field operation. An X65 pipeline steel with different surface preparations was used. The results showed that the dense near-neutral pH SCC cracks were successfully reproduced on the primer-coated samples, whereas sparse cracks were reproduced on the mill-scaled and polished samples. The densely spaced cracks could transform into sparsely spaced cracks when most of the primer layer and mill scale had been removed during the long period of corrosion under cyclic loading and further corrosion occurred thinning the crack density. The results of crack initiation obtained from this investigation have also been found to be quite consistent with crack initiation scenarios found during field operation.
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5

Wielage, B., A. Wank, G. Reisel, U. Gross, and G. Barth. "Optimization of Heat Transferring Components under Severe Wear Stress Conditions." In ITSC2003, edited by Basil R. Marple and Christian Moreau. ASM International, 2003. http://dx.doi.org/10.31399/asm.cp.itsc2003p0381.

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Abstract There is a variety of components, which are subject to high wear and/or corrosion stress on the one hand and are used to transfer heat on the other hand. Two examples are drying cylinders in paper production and condensing boilers. Up to now there are no data available for the thermal design of thermal spray coated components except for some MCrAlY and thermal barrier coatings for turbine applications. Also guidelines for the optimization of thermally sprayed coatings concerning heat transfer including the effect on the wear resistance are missing. HVOF sprayed cermet coatings are widely used for combined wear and corrosion protection these days. In addition to WC-CoCr 86 - 10 4 and 75 Cr3C2 - 25 Ni20Cr conventional Ni5Al and Ni20Cr bond coats are evaluated concerning their thermal conductivity in the range between room temperature and 600 °C. Also the thermal contact resistance is determined depending on the substrate material: mild steel S355J2G3 (1.0570), grey cast iron GG25 (0.6025) and austenitic stainless steel X5CrNi18-10 (1.4301, AISI 304). The applied Laser- Flash method requires knowledge of the heat capacity, thermal expansion and density, which are determined before. HVOF spraying has only negligible influence on the heat capacity of WC-CoCr feedstock, as the temperature depending functions are almost identical. The use of spraying feedstock with average WC particle sizes of 800 nm, 3 µm and 5 µm permits to investigate the influence of the specific surface area of the hard phases both on the thermal conductivity and wear resistance. Furthermore the influence of the coating porosity is determined. In accordance to the drying cylinder application the wear resistance is determined by Taber-Abraser wear tests. Bond coats are produced by HVOF, HVCW and arc spraying and compared concerning microstructure and thermal conductivity. A comparison to the properties of electroplated hard chromium coatings is drawn.
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6

Mochizuki, Masahito, and Masao Toyoda. "Strategy of Considering Microstructural Effect on Weld Residual Stress Analysis." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2649.

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Thermal distortion and residual stress are essentially generated by welding and it is well known that they affect the performance of welded structures such as brittle fracture, fatigue, buckling deformation, and stress-corrosion cracking. Welding distortions and residual stresses can be possible controlled and reduced by using some countermeasures. Not only thermal stress behavior but also prediction of microstructural phase during weld heat cycles are very important. High strength steels or martensitic stainless steels are used in a lot of power plant components, and the effect of phase transformation on mechanical behavior during welding in these steels becomes much larger than that of mild steels and austenitic stainless steels. Simultaneous simulation between thermal stress and microstructure during welding should be necessary in a precise evaluation. Analytical method and several applications to actual components are introduced in order to emphasize the effect considering microstructure on weld residual stress analysis.
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7

Kang, Jidong, Darren Bibby, James A. Gianetto, Mark Gesing, and Muhammad Arafin. "Some Factors Affecting Initiation of Stress Corrosion Cracking of an X80 Pipe Steel in Near-Neutral pH Environment." In 2018 12th International Pipeline Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/ipc2018-78540.

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Near-neutral pH stress corrosion cracking (NNpHSCC) continues to be a concern for existing high pressure pipelines used to transport oil and gas in Canada. Although several studies have focused on the role of pipe steel microstructure on the initiation and growth of NNpHSCC, most used specimens machined from sub-surface locations that did not preserve the original pipe surface, which is the material that ultimately exposed. In the present work, a series of test specimens were designed to preserve the external pipe surface and allowed shallow 0.05 mm root radius surface notches with depths from 0.1, 0.2 and 0.3 mm to be machined and tested. All specimens were machined in the hoop (transverse) direction from a 1067 mm diameter, 12.5 mm thick X80 pipe. The specimens were subjected to a constant load of 95% of the specified minimum yield strength (SMYS) (equivalent to 80% of the actual pipe hoop yield strength) using proof rings for extended durations, e.g., 110, 220, 440 or 660 days. The results show that there was no apparent SCC developed on the smooth specimens with the original surface even after being tested for up to 660 days. In contrast, SCC were found to have initiated at the machined notches, irrespective of their depth after testing for 220 days. To provide further understanding of specimen design, the same SCC testing conditions were applied to smooth round-bar test specimens machined in the hoop direction of this same pipe close to the external surface and the mid-wall locations. While minor SCC initiation was found in the near surface specimens, significant SCC was observed in the specimens taken from the mid-wall location. This finding suggests that the heterogeneous or variable microstructure through the pipe wall thickness plays a critical role in SCC initiation for the X80 pipe investigated. It also suggests that careful attention must be paid to the design of test specimens as well as the location that they are removed from a test pipe in order to realistically assess the SCC susceptibility of pipe steels.
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8

Naveed, Nida, Foroogh Hosseinzadeh, and Jan Kowal. "Residual Stress Measurement in a Stainless Steel Clad Ferritic Plate Using the Contour Method." In ASME 2013 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/pvp2013-97101.

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In pressure vessels stainless steel weld-overlay cladding is a widely used technique to provide a protective barrier between the corrosive environment and the ferritic low alloy base metal. While the cladding layers enhance corrosion resistance, the induced residual stresses due to the deposition of weld layers are of major concern. It is of paramount importance to understand how residual stresses interact with service loading when the vessel is pressurized. Therefore, knowledge of the initial residual stresses due to cladding is an essential input for structural integrity assessment of pressure vessels. In the present paper the Contour Method was conducted to measure residual stresses in an austenitic steel cladded plate that was fabricated from a ferritic steel base plate with three layers of austenitic stainless steel weld metal cladding deposited on the top surface. The Contour Method was chosen for various reasons. First, it provides a full 2D variation of residual stresses over the plane of interest. Second, it is not limited by the thickness of components or microstructural variations and finally it should potentially capture the variation of residual stresses in each individual weld beads and due to the possible phase transformation in the ferritic base material. The map of longitudinal residual stresses was measured by sectioning the test component along a transverse plane at mid-length. The measured residual stresses were in good agreement with published results in the open literature.
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9

Fessler, Raymond R., and Steve Rapp. "Method for Establishing Hydrostatic Re-Test Intervals for Pipelines With Stress-Corrosion Cracking." In 2006 International Pipeline Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/ipc2006-10163.

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Hydrostatic testing is one way to demonstrate the integrity of a pipeline that may contain stress-corrosion cracks. In order to establish appropriate intervals for such tests, it is necessary to make a reasonable assumption about the probable maximum growth rate of cracks that might exist in the pipeline. Although growth rates have been measured in laboratory experiments, those rates are not meaningful for a buried pipeline, because the growth rate depends upon many unknown factors, such as the condition of the coating, the composition of any liquid in contact with the pipe, the susceptibility of the steel, and the temperature. However, it is possible to infer what a probable maximum growth rate is, from the hydrostatic-test history of a portion of a pipeline. This paper describes a method for establishing hydrostatic-test intervals based upon the assumption that cracks that already led to a service failure or hydrostatic-test failure had a higher growth rate than surviving cracks. That assumption is reasonable, because the cracking conditions at the failed cracks must have been more severe than the conditions around any surviving or future crack. The method does not require any knowledge about the nature of the chemical environment at the surface of the pipe, the susceptibility of the steel, or whether the cracks are high-pH stress-corrosion cracks or near-neutral-pH stress-corrosion cracks. The only data that are required are probable maximum values for the actual yield strength and the actual ultimate tensile strength, which usually can be determined from mill records. Using this method, it can be shown that the interval lengths are strongly affected by the test pressure. It also can be shown that uniform test intervals are less effective than graduated intervals. In fact, subsequent intervals may be longer than previous ones, even if hydrotest failures occurred in the previous tests. The validity of this method was demonstrated by applying it, in principle, to actual historical data from over a dozen valve sections that have been subjected to multiple hydrostatic tests and showing that, if this method had been used, more failures would have been prevented with fewer tests.
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10

Mills, Douglas J., Joshua Zatland, and Nicola M. Everitt. "Experience Using Electrochemical Noise for Testing Green Corrosion Inhibitors." In SPE International Oilfield Corrosion Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/205475-ms.

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Abstract ‘Green’ corrosion inhibitors derived from plant materials provide environmentally friendly alternatives to conventional corrosion inhibitors. They are also much cheaper if using a biomass waste stream or abundant plant material as the source material. There are many examples in literature of different trials, from henna leaves to celery seeds to banana peel. Although it is known that extracts contain electron-rich polar atoms such as N, O, S and P which make them potentially effective inhibitors, it is difficult to predict on a molecular basis what will work well and what will not, since many interacting factors may be at play in complementary interactions. To assist in predicting the inhibition efficiency of inhibitors under varying conditions and choosing the most effective, what is needed is a short-term test which will obviate the need for tedious weight loss experiments. The Electrochemical Noise Method (ENM) uses the natural fluctuations which arise during electrochemical activity to gain information about the corrosion process. Using ENM is quick and non-intrusive method which makes it ideal for screening. Hence a rig has been designed and manufactured which allows for measurement to be made in stirred as well as static conditions and minimises the occurrence of crevice corrosion at the electrodes. Crevice corrosion is a hazard for ENM electrodes when trying to make a comparison with corrosion inhibition calculated using the standard weight loss measurement after immersion (WLM) method. For these preliminary trials we are exploring corrosion of mild steel in HCl in both stirred and unstirred conditions at room temperature. Results are presented comparing ENM measurements with conventional WLM for both Propargyl Alcohol (a conventional industrial corrosion inhibitor) and broccoli extract. Our results suggest that stirring does not make any difference to the noise measured in ENM. The amount of material lost calculated by ENM and WLM (Rn and weight loss values) can be directly compared and show close comparison. It seems likely that as a way of assessing inhibitors quickly (which is particularly important in the testing of "green" inhibitors) that this ENM approach has a lot to offer.
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Звіти організацій з теми "Mild steel Stress corrosion"

1

Elmore, M. R. Corrosion of mild steel in simulated cesium elution process solutions. Office of Scientific and Technical Information (OSTI), September 1996. http://dx.doi.org/10.2172/371211.

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2

Fraker, Anna C., and Jonice S. Harris. Corrosion behavior of mild steel in high pH aqueous media. Gaithersburg, MD: National Institute of Standards and Technology, 1989. http://dx.doi.org/10.6028/nist.ir.89-4173.

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3

Zhang, Y. Review: corrosion and stress corrosion cracking of wrought and additively manufactured 17-4 PH stainless steel. National Physical Laboratory, February 2022. http://dx.doi.org/10.47120/npl.mat100.

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4

Jackson, J. H., S. P. Teysseyre, and M. P. Heighes. Irradiation Assisted Stress Corrosion Cracking of Austenitic Stainless Steel in BWR Conditions. Office of Scientific and Technical Information (OSTI), June 2017. http://dx.doi.org/10.2172/1408502.

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5

Lykins, M. L. Review of corrosion in 10- and 14-ton mild steel depleted UF{sub 6} storage cylinders. Office of Scientific and Technical Information (OSTI), August 1995. http://dx.doi.org/10.2172/120922.

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6

Kolman, D. G., and D. P. Butt. Potential mechanisms for corrosion and stress corrosion cracking failure of 3013 storage containers composed of 316 stainless steel. Office of Scientific and Technical Information (OSTI), March 1998. http://dx.doi.org/10.2172/582206.

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7

Wyllie, W. E. II, D. J. Duquette, and D. Steiner. The effects of water radiolysis on the corrosion and stress corrosion behavior of type 316 stainless steel in pure water. Office of Scientific and Technical Information (OSTI), November 1994. http://dx.doi.org/10.2172/111892.

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8

Edgemon, G. L., P. C. Ohl, G. E. C. Bell, and D. F. Wilson. Detection of localized and general corrosion of mild steel in simulated defense nuclear waste solutions using electrochemical noise analysis. Office of Scientific and Technical Information (OSTI), December 1995. http://dx.doi.org/10.2172/195644.

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9

Lam, P. INVESTIGATION OF THE POTENTIAL FOR CAUSTIC STRESS CORROSION CRACKING OF A537 CARBON STEEL NUCLEAR WASTE TANKS. Office of Scientific and Technical Information (OSTI), October 2009. http://dx.doi.org/10.2172/966687.

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10

Lam, P. INVESTIGATION OF THE POTENTIAL FOR CAUSTIC STRESS CORROSION CRACKING OF A537 CARBON STEEL NUCLEAR WASTE TANKS. Office of Scientific and Technical Information (OSTI), November 2009. http://dx.doi.org/10.2172/967385.

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