Bibliografie tematiche / Chromium-molybdenum steel

Letteratura scientifica selezionata sul tema "Chromium-molybdenum steel"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 7 settembre 2023

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Articoli di riviste sul tema "Chromium-molybdenum steel"

1

Nazari, Ali, e Shadi Riahi. "Failure analysis of heat treated HSLA wheel bolt steels". Multidiscipline Modeling in Materials and Structures 6, n. 3 (24 settembre 2010): 373–82. http://dx.doi.org/10.1108/15736101011080114.

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PurposeThe aims of this study is to analyze failure of two types of high‐strength low‐alloy (HSLA) steels which are used in wheel bolts 10.9 grade, boron steel and chromium‐molybdenum steel, before and after heat treatment.Design/methodology/approachThe optimum heat treatment to obtain the best tensile behavior was determined and Charpy impact and Rockwell hardness tests were performed on the two steel types before and after the optimum heat treating.FindingsFractographic studies show a ductile fracture for heat‐treated boron steel while indicate a semi‐brittle fracture for heat‐treated chromium‐molybdenum steel. Formation of a small boron carbide amount during heat treating of boron steel results in increment the bolt's tensile strength while the ductility did not changed significantly. In the other hand, formation of chromium and molybdenum carbides during heat treating of chromium‐molybdenum steel increased the bolt's tensile strength with a considerable reduction in the final ductility.Originality/valueThis paper evaluates failure analysis of HSLA wheel bolt steels and compares their microstructure before and after the loading regime.
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2

Hejmej, S. W., e C. A. Brown. "Influence of Low Temperature Thermomechanical Treatment on Some Properties of High Alloy Tool Steels". Journal of Engineering for Industry 107, n. 2 (1 maggio 1985): 119–26. http://dx.doi.org/10.1115/1.3185974.

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Abstract (sommario):
The modification of mechanical properties (maximum bending strength and deflection, hardness and impact strength) of tool steels whose primary alloying elements are either chromium, tungsten, tungsten and molybdenum, or chromium and molybdenum by low temperature thermomechanical treatment (LTTMT) by rolling with deformations up to 20 percent and extrusion with 60 percent deformation has been investigated. The high chromium tool demonstrated the greatest consistent improvements in strength (40 percent) and deflection (55 percent) for LTTMT over conventional heat treatment. The influence of the LTTMT process on the microstructure of the chromium and tungsten steels is investigated by fractography using a scanning electron microscope. The tungsten steel and the extrusion process yielded a finer distribution of hard particles in the ductile matrix than did the chromium steel and rolling.
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3

Ota, Hiroki, Tomohiro Ishii, Takashi Samukawa, Takumi Ujiro e Hideaki Yamashita. "High Corrosion Resistance 21%Cr-0.4%Cu Ferritic Stainless Steel Contributing to Resource Conservation". Materials Science Forum 638-642 (gennaio 2010): 3435–40. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.3435.

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With prices for metal resources such as nickel and molybdenum soaring, there is a heightened sense of crisis concerning resource scarcity. While Type304, the most common stainless steel, offers excellent corrosion resistance, its price is affected significantly by the cost of nickel because of its 8% nickel content. The stainless steel that has the same corrosion resistance as that of Type304 and does not contain nickel and molybdenum has been required. JFE Steel Corporation has developed a new 21%Cr-0.4%Cu stainless steel, the world’s first ferritic stainless steel, which offers equivalent corrosion resistance to Type304 while containing absolutely no nickel or molybdenum, two rare metals. The newly developed steel contains 21% chromium with the addition of 0.4% copper. The development of the steel is based on a new discovery that the passive films of stainless steels could be strengthened by the synergy effect of high chromium content and copper addition. Copper addition enriches the chromium content in passive films after field exposure. Newly developed 21%Cr-0.4%Cu stainless steel is adopted for many applications as a substitution for Type304, including commercial kitchenware, building materials and industrial machinery. The steel is expected to be a new standard of a ferritic stainless steel as a substitution for Type304.
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4

Stoian, Elena Valentina, Maria Cristiana Enescu, Ivona Petre, Petre Cristian Fluieraru e Alexis Negrea. "Studies and Research on the Influence of Carbon and Chromium Content Aimed at Obtaining Superior Mechanical Characteristics of 16CD4 Steel Used in the Automobile Industry". Key Engineering Materials 750 (agosto 2017): 39–44. http://dx.doi.org/10.4028/www.scientific.net/kem.750.39.

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Long steel products type 16CD4 used in car industry must meet high quality conditions regarding chemical composition, surface quality, macro-structural, microstructural and mechanical characteristics. The paper presents the correlations between mechanical characteristics and the main alloying elements of 16CD4 steel; this will give varying characteristics Rm, A5 and KCU, in correlation with the various proportions of chrome, molybdenum and carbon contained by steel. This steel brand is part of the chosen alloy steels, presenting plastic deformation resistance in conditions of high temperature. See that it is not necessary maximum carbon content for the mechanical characteristics have maximum values. The material studied was 16CD4 steel (17MoCr11), developed in EBT and treated steel to LF. Mechanical properties dependent of the content of carbon, chromium and molybdenum have been analyzed in this paper, using a mathematical model. Model verification was conducted by test Fischer and the results indicate that there are strong correlations between the mechanical properties and the percentage of carbon, chromium and molybdenum.
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Nikitina, V. R., U. A. Pazilova e E. I. Khlusova. "Effect of vanadium and niobium on phase transformations in chromium-nickel-molybdenum shipbuilding steel." Voprosy Materialovedeniya, n. 2(114) (24 luglio 2023): 15–26. http://dx.doi.org/10.22349/1994-6716-2023-114-2-15-26.

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The effect of microalloying with niobium and vanadium on phase transformations and the structure of chromium-nickel-molybdenum steel during hardening, including after previous hot plastic deformation, has been studied. A low-carbon chromium-nickel-molybdenum steel with a different content of alloying and microalloying elements was chosen as the object of study. The performed studies made it possible to establish the regularities of the influence of microalloying additives, hot plastic deformation and grain size on phase transformations and structural features of chromium-nickel-molybdenum steel. The results of the study could be used to improve known technologies or create some new types of production
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6

Deepa, M., G. Sahoo e S. K. Dhua. "Effect of molybdenum addition on hardenability of chromium-boron steels used for press hardening applications". Journal of Mining and Metallurgy, Section B: Metallurgy 54, n. 3 (2018): 339–47. http://dx.doi.org/10.2298/jmmb180427024d.

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Two laboratory heats of low-Carbon low-alloy steels, one with boron and chromium additions and other with boron, chromium and molybdenum additions were made and cast into pencil ingots. These ingots were hot-rolled to 2 mm sheets suitable for press hardening application in an experimental rolling mill. A detailed study was made on the effect of various alloying elements on the microstructure and mechanical properties of these steels. A significantly higher hardness (~496 VHN), yield strength (~1137 MPa) and ultimate tensile strength (~1673 MPa) with comparable elongation (~6%) could be achieved in the as rolled and water-quenched Mo-Cr-B steel in comparison to Cr-B steel under similar processing condition. Moreover, a reduction of critical cooling rate by10?C/s was observed in this steel to obtain fully martensitic structure. The combined addition of boron, chromium and molybdenum was found to be more effective than that of boron and chromium in enhancing the microstructure and mechanical properties of boron-added steels. Additionally, a few hot compression tests were carried out to simulate the press hardening process of these experimental steels. It was found that one of the press hardening process parameters, viz., prior strain had a greater impact on the transformation behaviour of Cr-B and Mo-Cr-B steels during cooling.
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Bobyr, S. V., E. V. Parusov, T. M. Golubenko, O. E. Baranovska e I. M. Chuiko. "Study of the influence of cryogene processing on the characteristics of structure formation and fatigue resistance of 38KHN3MFA steel after preliminary thermal hardening". Fundamental and applied problems of ferrous metallurgy 36 (2022): 430–40. http://dx.doi.org/10.52150/2522-9117-2022-36-430-440.

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The purpose of the work is to study the influence of complex heat treatment on the peculiarities of the formation of the structure and properties of carbon steel alloyed with chromium, nickel, molybdenum and vanadium. Currently, carbon alloy steels (38CrNi3MoV, 65Cr3SiMoV, 80Cr3MoV) containing chromium, molybdenum, nickel, vanadium and other expensive chemical elements are used for the production of various metallurgical and machine-building products (rolling rolls, rulers, piercing mandrels, parts of power equipment). However, the wear resistance of finished products made of specified steels in harsh operating conditions (significant cyclic loads and elevated temperatures) is insufficient in practice. One of the methods of effective influence on the improvement of the operational resistance of alloyed carbon steels may be the use of cryogenic treatment after preliminary thermal hardening. The results of studies of the effect and duration of cryogenic treatment on the features of structure formation, microhardness, hardness, and wear resistance of 38CrNi3MoV steel previously subjected to thermal hardening are presented. It was established that the duration of exposure of 38CrNi3MoV steel in liquid nitrogen should be at least 1.0 hours, which allows to achieve an increase in microhardness and wear resistance by 12 % and 17.4 %, respectively. The obtained results allow us to state that the use of cryogenic treatment at the final stage of thermal hardening will ensure an increase in the operational durability of products of special purpose, which are made of 38CrNi3MoV steel. The developed method can be recommended for the industrial implementation of the technology of complex heat treatment of carbon steels with increased wear resistance, which additionally contain chromium, nickel, molybdenum and vanadium.
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Schino, Andrea Di. "CORROSION BEHAVIOUR OF AISI 460LI SUPER-FERRITIC STAINLESS STEEL". Acta Metallurgica Slovaca 25, n. 4 (18 dicembre 2019): 217. http://dx.doi.org/10.12776/ams.v25i4.1363.

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<p class="AMSmaintext1"><span lang="EN-GB">Following nickel and molybdenum significant price increase, nowadays the stainless steel market is moving toward an increasing use of ferritic stainless steel instead of austenitic stainless and therefore to the development of advanced ferritic stainless steels grades aimed to substitute the more expensive austenitic materials in all applications allowing it. Super-ferritic stainless steels are higher chromium (Cr) and molybdenum (Mo) steels with properties similar to those of standard ferritic alloys. Such elements increase high temperature and corrosion resistance in strong environment. This paper deal about the corrosion resistance of super-ferritic stainless steels with a Cr content ranging from 21% to 24%. </span></p>
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Rajput, Deepak, Kathleen Lansford, Lino Costa e William Hofmeister. "Molybdenum-on-chromium dual coating on steel". Surface and Coatings Technology 203, n. 9 (gennaio 2009): 1281–87. http://dx.doi.org/10.1016/j.surfcoat.2008.10.029.

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Zaman, Hainol Akbar, Safian Sharif, Mohd Hasbullah Idris e Anisah Kamarudin. "Metallic Biomaterials for Medical Implant Applications: A Review". Applied Mechanics and Materials 735 (febbraio 2015): 19–25. http://dx.doi.org/10.4028/www.scientific.net/amm.735.19.

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Stainless steel, titanium alloys and cobalt chromium molybdenum alloys are classified under the metallic biomaterials whereby various surgical implants, prosthesis and medical devices are manufactured to replace missing body parts which may be lost through accident, trauma, disease, or congenital conditions. Among these materials, cobalt chromium molybdenum alloys are the common cobalt base alloy used for orthopedic implants due their excellence properties which include high corrosion resistance, high strength, high hardness, high creep resistance, biocompatibility and greater wear resistance. This paper summarises the various aspects and characteristic of metallic biomaterials such as stainless steel, titanium and cobalt chromium alloys for medical applications especially for orthopedic implant. These include material properties, biocompatibility, advantages and limitations for medical implants applications.
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Tesi sul tema "Chromium-molybdenum steel"

1

Susanto, Benny Laurensius Materials Science &amp Engineering Faculty of Science UNSW. "Kinetics of carbide dissolution in chromium + molybdenum steels during oxidation". Awarded by:University of New South Wales. Materials Science and Engineering, 2004. http://handle.unsw.edu.au/1959.4/19385.

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Abstract (sommario):
Iron-based alloys containing 15% chromium, 2-3% molybdenum and 0.02-1.7% carbon, consisting of M23C6 and M6C carbides in an austenitic matrix were oxidised at 8500C to study their oxidation resistance and a precipitate-free zone formation. Alloy design was carried out using a thermodynamic software Thermo-Calc. Carbides in these alloys were expected to dissolve during oxidation, releasing chromium required for the protective oxide formation. Decarburisation of the matrix was expected to trigger the carbide dissolution, and form a precipitate-free zone. Transformation of the austenitic into ferritic matrix in the precipitate-free zone was expected be essential for providing a fast chromium supply to the oxide/alloy interface. Upon exposure to pure oxygen, most of the alloys oxidised non-protectively due to the fast oxidation attack and low chromium content in the matrix, while carbide dissolution was too slow. The alloys were then pre-oxidised in H2+10%H2O to grow a purely chromia scale. In this low oxygen partial pressure environment, carbides in the alloy's sub-surface dissolved and formed a ferritic precipitate-free zone. The precipitate dissolution model developed by previous investigators was then tested and proven to be valid in this iron-based alloy system. The endurance of the pre-formed chromia scale with its underlying precipitate-free zone was then tested in pure oxygen environment. All of the alloys that had successfully developed a ferritic precipitate-free zone in the pre-oxidation stage, survived the subsequent oxidation in pure oxygen up until 3 weeks observation. Although x-ray diffraction found some minor iron oxides, the oxide consisted of mainly Cr2O3. Since iron activity had increased and iron oxides had become stable after the pure oxygen gas was introduced, the growth of the precipitate-free zone had to compete with the rate at which it was consumed by oxidation. It was concluded that the transformation from austenite to ferrite at the subsurface region of the alloy could be achieved provided that the volume fraction of the carbides did not exceed 0.2. Evidence indicated that the chromia scale grew by chromium provided by the dissolving carbides. Pre-oxidation led to a promising use of the alloys at atmospheric oxygen pressure.
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2

Collington, Rachel A. "Creep crack initiation and growth in 2.25% chromium-1% molybdenum alloy steel". Thesis, Sheffield Hallam University, 2001. http://shura.shu.ac.uk/3172/.

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2.25%Cr-1 %Mo Steel has been utilised extensively for the manufacture of power plant components. This study has highlighted the implication of the presence of pre-existing defects in such components and, in particular, the influence of the microstructure on the creep deformation response ahead of a defect during the crack initiation, or incubation, period. The investigation was conducted by carrying out creep tests on compact tension specimens in three microstructural variations of the alloy and, subsequently, using optical, scanning and transmission electron microscopy techniques to evaluate the creep damage in the "defect" tip region up to a point where -1 mm of crack extension was detected. Details of two image analysis routines devised specifically for this project have been presented and their suitability for purpose discussed. The first of these routines allowed the distribution and density of creep voids occurring ahead of the simulated defect to be quantified using back scattered electron imaging in the scanning electron microscope. The second allowed carbides, extracted from the alloy, to be classified in the STEM on the basis of their key element ratios. The microstructural constraint imposed by the material ahead of the defect tip was shown to critically affect the crack initiation and growth process; the order of constraint observed being that of 100% bainite > mixed ferrite / bainite > mixed ferrite / pearlite. A correlation between the carbide type, distribution and shape and the creep deformation and crack initiation process has been discussed and the implications of this to remanent life assessment suggested. Evolution of M23C6 grain boundary carbides to the equilibrium carbide, M6C, and the affect of the grain boundary sliding on the shape of the M6C, were proposed to be the most important microstructural phenomena contributing to the crack initiation process. A detailed review of published literature relating to the topic studied and recommendations for further work have also been included in this thesis.
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Levin, Victor D. "Laves phase strengthening in a cold-worked iron-chromium-nickel-molybdenum austenitic stainless steel". Case Western Reserve University School of Graduate Studies / OhioLINK, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=case1060348273.

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Norris, Richard H. "Creep crack growth behavior in weld metal/base metal/fusion zone regions in chromium molybdenum steels". Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/19451.

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Kim, Yeong Ho. "Chromium-free consumable for welding stainless steel corrosion perspective /". Columbus, Ohio : Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1133285376.

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Trueman, Anthony Roger. "Characterization and corrosion studies of high carbon tool steel/tungsten carbide metal matrix composites". Thesis, Queensland University of Technology, 1999.

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BORRO, JUNIOR ADAYR. "Estudo do efeito da nitretacao liquida e gasosa no comportamento mecanico de um aco ferramenta para trabalho a frio sinterizado 2,3 %C -12,5%Cr - 1,1%Mo - 4% V , temperado e revenido". reponame:Repositório Institucional do IPEN, 2001. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10948.

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IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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BORRO, JUNIOR ADAYR. "Estudo do efeito da nitretacao liquida e gasosa no comportamento mecanico de um aco ferramenta para trabalho a frio sinterizado 2,3 porcento C - 12,5 porcento Cr - 1,1 ... , temperado e revenido". reponame:Repositório Institucional do IPEN, 2001. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10948.

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IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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Strahin, Brandon L. "The Effect of Engineered Surfaces on the Mechanical Properties of Tool Steels Used for Industrial Cutting Tools". University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1506692623324192.

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Lin, Sing-Min, e 林賜民. "Studies on Precision Grinding Characteristics of Chromium - Molybdenum Alloy Steel". Thesis, 1994. http://ndltd.ncl.edu.tw/handle/29588365628656821941.

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碩士
國立成功大學
機械工程研究所
82
This thesis investigates the grinding characteristics of chromium-molybdenum alloy steel with the vitrified bonded CBN (cubic boron nitride) and Al2O3 wheel. The grinding forces, surface roughness and wheel wear were measured under various grinding conditions, and an optimum grinding condition was obtained. Using the 3-axis machining center, dynamometer and surface roughness testing machine, the grinding force and the surface roughness of the specimem under various grinding conditions for both alumina oxide and cubic boron nitride wheel. The experimental results showed that te grinding performance with cubic boron nitride is superior to that with alumina oxide. Based on the experimental results of this study, an optimum grinding condition was applied to the grinding of variable pitch lead screw with conical meshing elements. Then, the surface quality of the screw was measured.
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Libri sul tema "Chromium-molybdenum steel"

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Machining of stainless steels and super alloys: Traditional and nontraditional techniques. Hoboken: John Wiley and Sons, Inc., 2015.

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Wielgosz, Roman. Próba prognozowania trwałości stali chromowo-molibdenowych dla energetyki. Kraków: Politechnika Krakowska, 1988.

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Youssef, Helmi A. Machining of Stainless Steels and Super Alloys: Traditional and Nontraditional Techniques. Wiley & Sons, Incorporated, John, 2015.

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Youssef, Helmi A. Machining of Stainless Steels and Super Alloys: Traditional and Nontraditional Techniques. Wiley & Sons, Incorporated, John, 2015.

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American Welding Society. AWS B2.1-5A-225 : 2022, Standard Welding Procedure Specification for Gas Tungsten Arc Welding of Chromium- Molybdenum Steel , IN521 and ER90S-B3, 1/8 Inch [3 Mm] Through 1/2 Inch [13 Mm] Thick, As-Welded Condition; 1/8 Inch [3 Mm] Through 3/4 Inch [19 Mm] Thick, PWHT Condition, Primarily Pipe Applications : AWS B2.1-5A-225: 2022, Standard Welding Procedure Specification for Gas Tungsten Arc Welding of Chromium- Molybdenum Steel , IN521 and ER90S-B3, 1/8 Inch [3 Mm] Through 1/2 Inch [13 Mm] Thick, As-Welded Condition; 1/8 Inch [3 Mm] Through 3/4 Inch [19 Mm] Thick, PWHT Condition, Primarily Pipe Applications. American Welding Society, 2022.

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American Welding Society. AWS B2.1-5A-222 : 2022, Standard Welding Procedure Specification for Gas Tungsten Arc Welding of Chromium-Molybdenum Steel , ER90S-B3, 1/8 Inch [3 Mm] Through 1/2 Inch [13 Mm] Thick, As-Welded Condition; 1/8 Inch [3 Mm] Through 3/4 Inch [19 Mm] Thick, PWHT Condition, Primarily Pipe Applications : AWS B2.1-5A-222: 2022, Standard Welding Procedure Specification for Gas Tungsten Arc Welding of Chromium-Molybdenum Steel , ER90S-B3, 1/8 Inch [3 Mm] Through 1/2 Inch [13 Mm] Thick, As-Welded Condition; 1/8 Inch [3 Mm] Through 3/4 Inch [19 Mm] Thick, PWHT Condition, Primarily Pipe Applications. American Welding Society, 2022.

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American Welding Society. AWS B2.1-5A-223 : 2022, Standard Welding Procedure Specification for Shielded Metal Arc Welding of Chromium-Molybdenum Steel , E9018-B3, 1/8 Inch [3 Mm] Through 1/2 Inch [13 Mm] Thick, As-Welded Condition; 1/8 Inch [13 Mm] Through 1-1/2 Inch [38 Mm] Thick, PWHT Condition, Primarily Pipe Application : AWS B2.1-5A-223: 2022, Standard Welding Procedure Specification for Shielded Metal Arc Welding of Chromium-Molybdenum Steel , E9018-B3, 1/8 Inch [3 Mm] Through 1/2 Inch [13 Mm] Thick, As-Welded Condition; 1/8 Inch [13 Mm] Through 1-1/2 Inch [38 Mm] Thick, PWHT Condition, Primarily Pipe Application. American Welding Society, 2022.

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American Welding Society. Standard Welding Procedure Specification for Gas Tungsten Arc Welding Followed by Shielded Metal Arc Welding of Chromium-Molybdenum Steel , ER90S-B3 and E9018-B3, 1/8 Inch [3 Mm] Through 1/2 Inch [13 Mm] Thick, As-Welded Condition; 1/8 Inch [3 Mm] Through 1-1/2 Inch [38 Mm] Thick, PWHT Condition, Primarily Pipe Applications: Standard Welding Procedure Specification for Gas Tungsten Arc Welding Followed by Shielded Metal Arc Welding of Chromium-Molybdenum Steel , ER90S-B3 and E9018-B3, 1/8 Inch [3 Mm] Through 1/2 Inch [13 Mm] Thick, As-Welded Condition; 1/8 Inch [3 Mm] Through 1-1/2 Inch [38 Mm] Thick, PWHT Condition, Primarily Pipe Applications. American Welding Society, 2022.

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American Welding Society. AWS B2.1-5A-226 : 2022, Standard Welding Procedure Specification for Gas Tungsten Arc Welding Followed by Shielded Metal Arc Welding of Chromium- Molybdenum Steel , IN521, ER90S-B3, and E9018-B3, 1/8 Inch [3 Mm] Through 1/2 Inch [13 Mm] Thick, As-Welded Condition; 1/8 Inch [3 Mm] Through 1-1/2 Inch [38 Mm] Thick, PWHT Condition, Primarily Pipe Applications : AWS B2.1-5A-226: 2022, Standard Welding Procedure Specification for Gas Tungsten Arc Welding Followed by Shielded Metal Arc Welding of Chromium- Molybdenum Steel , IN521, ER90S-B3, and E9018-B3, 1/8 Inch [3 Mm] Through 1/2 Inch [13 Mm] Thick, As-Welded Condition; 1/8 Inch [3 Mm] Through 1-1/2 Inch [38 Mm] Thick, PWHT Condition, Primarily Pipe Applications. American Welding Society, 2022.

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American Welding Society. AWS B2.1-5A-224 : 2022, Standard Welding Procedure Specification for Gas Tungsten Arc Welding Followed by Shielded Metal Arc Welding of Chromium-Molybdenum Steel , ER90S-B3 and E9018-B3, 1/8 Inch [3 Mm] Through 1/2 Inch [13 Mm] Thick, As-Welded Condition; 1/8 Inch [3 Mm] Through 1-1/2 Inch [38 Mm] Thick, PWHT Condition, Primarily Pipe Applications : AWS B2.1-5A-224: 2022, Standard Welding Procedure Specification for Gas Tungsten Arc Welding Followed by Shielded Metal Arc Welding of Chromium-Molybdenum Steel , ER90S-B3 and E9018-B3, 1/8 Inch [3 Mm] Through 1/2 Inch [13 Mm] Thick, As-Welded Condition; 1/8 Inch [3 Mm] Through 1-1/2 Inch [38 Mm] Thick, PWHT Condition, Primarily Pipe Applications. American Welding Society, 2022.

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Capitoli di libri sul tema "Chromium-molybdenum steel"

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Nomura, Kyosuke, Naoki Tonooka, Yoshinobu Shimamura, Hitoshi Ishii, Tomoyuki Fujii e Keiichiro Tohgo. "Effect of Variable Loading on Very High Cycle Fretting Fatigue of Chromium-Molybdenum Steel". In Springer Proceedings in Physics, 143–49. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2294-9_13.

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Sulowski, Maciej, Andrzej Cias, Marin Stoytchev e Tchavdar Andreev. "The Effect of Chemical Composition of Sintering Atmosphere on the Structure and Mechanical Properties of PM Manganese Steels with Chromium and Molybdenum Additions". In Progress in Powder Metallurgy, 753–56. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-419-7.753.

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"Corrosion of Ferritic Stainless Steel Weldments". In Corrosion of Weldments, 77–97. ASM International, 2006. http://dx.doi.org/10.31399/asm.tb.cw.t51820077.

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Abstract (sommario):
Abstract Ferritic stainless steels are essentially iron-chromium alloys with body-centered cubic crystal structures. Chromium content is usually in the range of 11 to 30%. The primary advantage of the ferritic stainless steels, and in particular the high-chromium, high-molybdenum grades, is their excellent stress-corrosion cracking resistance and good resistance to pitting and crevice corrosion in chloride environments. This chapter provides information on the classifications, properties, and general welding considerations of ferritic stainless steels. The emphasis is placed on intergranular corrosion, which is the most common cause of failure in ferritic stainless steel weldments. Two case histories involving intergranular corrosion failures of ferritic stainless steel weldments are included. A brief discussion on hydrogen embrittlement is also provided.
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"12% chromium, molybdenum, vanadium creep-resisting steel". In The Alloy Tree. CRC Press, 2004. http://dx.doi.org/10.1201/9780203024010.ch7a.

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"Modified 9% chromium, 1% molybdenum creep-resisting steel". In The Alloy Tree. CRC Press, 2004. http://dx.doi.org/10.1201/9780203024010.ch3a.

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"Fatigue Fracture of a Cast Chromium-Molybdenum Steel Pinion". In ASM Failure Analysis Case Histories: Steelmaking and Thermal Processing Equipment. ASM International, 2019. http://dx.doi.org/10.31399/asm.fach.steel.c0047406.

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"17% chromium, 12% nickel, 2.5% molybdenum austenitic stainless steel". In The Alloy Tree. CRC Press, 2004. http://dx.doi.org/10.1201/9780203024010.ch3e.

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"19% chromium, 13% nickel, 3.5% molybdenum, austenitic stainless steel". In The Alloy Tree. CRC Press, 2004. http://dx.doi.org/10.1201/9780203024010.chf0.

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"Rupture of Chromium-Molybdenum Steel Superheater Tubes Because of Overheating". In ASM Failure Analysis Case Histories: Failure Modes and Mechanisms. ASM International, 2019. http://dx.doi.org/10.31399/asm.fach.modes.c0048294.

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"Leaky Heating Coils of an Austenitic Chromium-Nickel-Molybdenum Steel". In ASM Failure Analysis Case Histories: Failure Modes and Mechanisms. ASM International, 2019. http://dx.doi.org/10.31399/asm.fach.modes.c9001177.

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Atti di convegni sul tema "Chromium-molybdenum steel"

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Paris, Anthony, Alex Bergeron, Matthew Cullin e Andres Munk. "Fatigue Behavior of Stainless Steel, Titanium, and Cobalt Chromium Molybdenum Spinal Rods". In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19720.

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Abstract (sommario):
The objective of this study was to measure and compare the fatigue behavior of 316L stainless steel, titanium (Ti-6Al-4V), and cobalt chromium molybdenum (CoCrMo) spinal rods in vitro. Spinal rods are used to immobilize the spine while fusion of the vertebrae occurs (spinal arthrodesis). Implanted spinal rods are subjected to cyclic loading and are therefore susceptible to fatigue failure if fusion does not occur sufficiently quickly. A significant number of spinal rod fatigue failures have been observed between six months to one year following surgical implantation. On average, the spine will experience about 3 million cycles per year. Stress overloads can result in permanent deformation or immediate failure of the rod, however these overloads are seldom the root cause of failure—rods typically fail by fatigue [1].
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Agafii, V., J. Padgurskas, V. Mihailov, A. Andriušis, R. Kreivaitis e A. Ianachevici. "Increasing Wear Resistance of 30x13 Stianless Steel by Electrospark Alloying". In BALTTRIB 2015. Aleksandras Stulginskis University, 2015. http://dx.doi.org/10.15544/balttrib.2015.14.

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In this work were studied the tribological properties of coatings of molybdenum, silver, chrome + molybdenum, molybdenum + BrOF6.5-0.15, obtained by electrospark alloying method on 30X13stainless steel. At the load of 200 N was established dependence between the coating wear and its hardness, the higher the hardness, the smaller is the wear of the coating and vice versa. The volumetric wear of the coatings at a load of 100 N increases in the direction of Мо=Cr + Mo → Steel 45 → Mo + BrОF6.5-0.15 → Ag, and at a load of 200 N increases in the direction of Мо→Cr + Mo → Steel 45 → Mo + BrОF6.5-0.15 → Ag. At all loads, the combination coatings made of chromium + molybdenum (f≈0.08) had the highest friction coefficient (f≈0.08), and the combination coatings made of Mo + BrОF6.5-0.15 had the lowest ones (f≈0.043-0.046).
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Ott, George A., e Carlos Morone. "THE PHYSICAL METALLURGY OF 4% CHROMIUM MOLYBDENUM FORGED STEEL COLD MILL WORK ROLLS". In 49º Seminário de Laminação. São Paulo: Editora Blucher, 2012. http://dx.doi.org/10.5151/2594-5297-22735.

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Furukawa, Tomohiro, Eiichi Yoshida e Kazumi Aoto. "Corrosion Behavior of Steels in Lead-Bismuth Eutectic: In Stagnant LBE Test at Low Oxygen Partial Pressure". In 12th International Conference on Nuclear Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/icone12-49061.

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Abstract (sommario):
Corrosion test of three chromium-molybdenum steels — 2.25Cr-1Mo, Mod.9Cr-1Mo and 12Cr-steel (ASME P122) — has been performed in stagnant lead–bismuth eutectic (LBE) at low oxygen partial pressure at 550 °C up to 2,000 hours. After the test, the specimens were metallurgically examined using a scanning electron microscopy. All steels had good resistance to LBE under this test condition, and the difference of the effect of chromium concentration in the steels on corrosion behavior was not observed. Corrosion depth of the steels was a few microns, and chromium solution into LBE was observed on the surface. Very thin chromium oxide layer was partly observed on the surfaces of all steels. At the area, no corrosion was occurred. The behavior was the same as the results of martensitic steels tested in stagnant LBE containing 10−7 wt% to 10−8 wt% of oxygen.
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Wada, Tadahiro. "Tool wear of aluminum/chromium/tungsten/silicon-based-coated solid carbide thread milling cutters in thread tapping of chromium-molybdenum steel". In 2016 7th International Conference on Mechanical and Aerospace Engineering (ICMAE). IEEE, 2016. http://dx.doi.org/10.1109/icmae.2016.7549538.

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Peangchit, Phacharadit, e Charnnarong Saikaew. "Influences of Cutting Speed on Surface Roughness during Machining of Chromium Molybdenum Steel with Ceramic Insert Cutting Tool". In 2017 International Symposium on Computer Science and Intelligent Controls (ISCSIC). IEEE, 2017. http://dx.doi.org/10.1109/iscsic.2017.30.

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Mohr, A., O. Schwabe, K. Ernst, H. Hill e P. Kluge. "Thermal Spraying of a Novel Nickel-Free High Strength and Corrosion Resistant Austenitic Steel". In ITSC2022. DVS Media GmbH, 2022. http://dx.doi.org/10.31399/asm.cp.itsc2022p0631.

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Abstract (sommario):
Abstract Stainless austenitic steels like the 316L (1.4404) are widely applied in various applications and were also used for surface protection using thermal spraying. The reason for this is the easy processability and the high corrosion resistance. Stainless austenitic steels typically contain the following alloying elements: The formation of an austenitic microstructure is achieved by nickel (Ni). The addition of chromium (Cr) lead to good corrosion resistance due to formation of an oxide layer. For resistance against pitting corrosion, molybdenum (Mo) can be added. Also, stainless austenites usually exhibit very low carbon and nitrogen contents to prevent chromium carbides and nitrides which reduces the corrosion resistance. However, both alloying elements cannot be classified as being detrimental in stainless austenites in general. In contrast high nitrogen contents can also be used to improve the chemical properties, especially the resistance against pitting corrosion. Finally, carbon and nitrogen lead to an increase in hardness of the thermal sprayed layer. Based on this knowledge, a high-strength austenite for thermal spraying was developed. The new high strength austenite was processed by HVAF spraying with different particle distributions and parameter variations. Resulting coatings were investigated regarding the microstructure, elemental composition, hardness and corrosion properties in comparison to the standard coating material 316L.
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Era, H., K. Hashimoto, N. Sakoda, Z. Zeng e S. Sako. "Improvement of Corrosion Resistance of Thermal-Sprayed Stainless Steel Coating by Addition of Some Deoxidizing Elements". In ITSC2015, a cura di A. Agarwal, G. Bolelli, A. Concustell, Y. C. Lau, A. McDonald, F. L. Toma, E. Turunen e C. A. Widener. ASM International, 2015. http://dx.doi.org/10.31399/asm.cp.itsc2015p0467.

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Abstract (sommario):
Abstract A modified stainless steel coating, named as M-SUS here, was prepared by the air plasma spray process (APS) and the high velocity flame spray process (HVOF) and compared with a conventional stainless steel (JIS: SUS316L). Anodic polarization tests using NaCl, HCl solutions, neutral salt spray test, and exposure test in actual tank for HCl storage were employed for the evaluation of corrosion resistance. Structure of the coatings was investigated by use of optical microscope, scanning electron microscope, electron probe micro-analyzer, and transmission electron microscope. It was found that the coating M-SUS exhibited a remarkably superior corrosion resistance by all tests mentioned above, compared with the conventional ones. Although both of the coatings compose of gamma-austenite (γ-Fe) and delta-ferrite (δ-Fe) phases, the coating M-SUS reveals much less oxide with chromium and more delta-phase enriched with molybdenum. Another exposure test using a mixed acid of 25%HNO3 and 75%HCl yielded that the δ-Fe was not etched out but the γ-Fe vanished, that is, the δ-Fe of M-SUS has a strong anti-corrosion property. It is considered that the superior corrosion resistance of coating M-SUS is attributed to the extensive formation of anti-corrosive δ-Fe and inhibition of chromium depletion resulting from oxide formation.
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Hankui, Wang, Xu Tong e Shou Binan. "A Method to Evaluate the Temper Embrittlement From Step Cooling Test". In ASME 2014 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/etam2014-1015.

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Abstract (sommario):
A new mathematic approach is proposed to evaluate the temper embrittlement from the step cooling test. The approach is composed of two parts. A nonlinear model, which acts as weight factor, is used to fit the variance at different test temperatures, and the maximum likelihood method is used to determine the curve parameters. In the ASME specification SA-542, there is no instruction provided on how to determine the transition temperature from the test results. This method could be adopted as an additional supplementary requirement to assess the temper embrittlement of Chromium-Molybdenum steel. Paper published with permission.
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Venkatesh, Anand, e Ajit K. Roy. "The Evaluation of the Cracking Susceptibility of Alloy 718 in an Acidic Solution". In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26493.

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Abstract (sommario):
An austenitic iron-nickel-chromium-molybdenum steel, known as Alloy 718 (N07718), has been investigated for its corrosion resistance in an aqueous environment relevant to the sulfur-iodine (S-I) process, proposed to generate hydrogen using nuclear heat. The slow-strain-rate (SSR) testing method was used to evaluate the cracking susceptibility of this alloy at ambient and elevated temperatures. A strain rate of 3.3 × 10−6 sec−1 was used in these tests. The localized corrosion behavior of this alloy was also evaluated by the cyclic potentiodynamic polarization technique. Further, the fracture morphology of the specimens used in SSR testing was determined by scanning electron microscopy.
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