Results 131 to 140 of about 450 (186)
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Microalloyed steel for railroad wheels
Steel in Translation, 2008Radical improvement in the reliability and longevity of railroad wheels at high train speeds and loads depends primarily on improvements in the properties of wheel steel: increased static and cyclic strength, high- and low temperature strength, and wear resistance, and low likelihood of the formation of martensitic surface zones.
S. Ya. Shipitsyn +4 more
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Plasma nitriding of microalloyed steel
Surface and Coatings Technology, 1995Abstract 3icroalloyed or high strength low alloy (HSLA) steels are carbon-manganese steels containing small amounts of Nb, V or Ti. The excellent mechanical properties of these alloys, particularly high yield strength, usually obviate the need for expensive quench and tempering operations.
F. Mahboubi +4 more
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Microalloyed Steel Bars and Forgings
JOM, 1986This paper examines microalloyed steels—steels which develop their properties in the as-received condition without requiring further heat treatment, such as quenching and tempering. Microalloyed steel bars and forgings offer a clear cut potential for cost reduction and energy savings.
R. S. Cline +2 more
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Materials Science Forum, 1998
Microalloyed forging steels have been developed to improve the competitiveness of wrought steel components, especially in the automotive sector, by achieving the desired properties in the as-forged condition, thus eliminating the need to subsequently heat treat, straighten and stress relieve the previously specified low alloy steels.
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Microalloyed forging steels have been developed to improve the competitiveness of wrought steel components, especially in the automotive sector, by achieving the desired properties in the as-forged condition, thus eliminating the need to subsequently heat treat, straighten and stress relieve the previously specified low alloy steels.
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Fatigue of Microalloyed Bar Steels
SAE Technical Paper Series, 2000<div class="htmlview paragraph">The fatigue behavior of five microalloyed steels, processed with hardnesses between 25-28 HRC containing microstructures ranging from precipitation-hardened ferrite-pearlite to bainite, were evaluated in both low cycle (strain controlled) and high cycle (stress controlled fatigue.
John A. Johnson +2 more
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Microalloy steels – the beginning
Materials Science and Technology, 2009Although steels containing small amounts of vanadium or titanium had long been available, the rapid development and exploitation of microalloy steels was initiated by the recognition of the advantages of adding a small amount of niobium to C–Mn steels.
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Exafs investigation of microalloyed steel
Scripta Metallurgica, 1984Pour ameliorer la composition et la fabrication des aciers microallies on a besoin de methodes precises pour mesurer les quantites d'elements de microalliage presents en solution solide ou sous forme de fins precipites et pour determiner la structure de ces precipites.
G.P. Huffman +4 more
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Study of cast microalloyed steels
Materials Science and Technology, 2003AbstractImproved grades of cast steels were prepared by microalloying C–Mn–Cr steels (0.15–0.22C, wt-%) with V (0.1)+Ti (0.01) or V (0.11)+Nb (0.034)+Ti (0.01) combinations. When quenched and tempered an ultimate tensile strength (UTS) of the order of 784–1078 MPa (80–110 kg mm2) and an elongation ranging from 10 to 35% were achieved.
B.D. Jana, A.K. Chakrabarti, K.K. Ray
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Microalloyed Low-Carbon Multiphase Steels
steel research international, 2015Actual multiphase steels guarantee tensile strengths in different grades between 500 and 1000 MPa. Specifications and standards permit a wide field of chemical compositions. On one hand, carbon amounts higher than 0.12% are not seldom for grades exceeding 600 MPa tensile strength.
Volker Flaxa, Sascha Kluge
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Ductility of Microalloyed Steels during Hot Deformation
Materials Science Forum, 2010The ductility behaviour experienced by steels for linepipe (LP) applications in a temperature range generally from 700°C to 1200°C is a widely studied subject in steel research, especially for its implication on cracking during continuous casting and rolling.
A. Mannucci +3 more
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