Results 181 to 190 of about 6,376 (231)

Plasma nitriding of microalloyed steel

Surface and Coatings Technology, 1995
Abstract 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, M. Samandi, D. Dunne, A. Bloyce, T. Bell   +4 more
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Use of Zirconium in Microalloyed Steels

Advanced Materials Research, 2006
In this work, three Zr microalloyed steels with different levels of Zr were compared with plain C-Mn, Nb and Nb-Ti steels. Austenitic grain size was compared as a function of temperature for these steels. A qualitative assessment of the potential of Zr to delay austenite recrystallization, was also undertaken. Of course, the actual use of Zr depends on
A.R.B. Maia, C.R. Guinâncio, R.L. Germano, Paulo Rangel Rios, Ivani de S. Bott   +4 more
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Microalloyed steel for railroad wheels

Steel in Translation, 2008
Radical 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, Yu. Z. Babaskin, I. F. Kirchu, L. G. Smolyakova, N. Ya. Zolotar   +4 more
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Microalloyed Forging Steels

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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Microalloy steels – the beginning

Materials Science and Technology, 2009
Although 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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Microalloyed Steel Bars and Forgings

JOM, 1986
This 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, W. E. Heitmann, D. Bhattacharya   +2 more
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Microalloying of steel with vanadium and nitrogen

Steel in Translation, 2014
The microalloying of steel with vanadium and nitrogen is experimentally studied. The goal is to compare the results when steel is alloyed with standard ferrovanadium and vanadium converter slag (with gaseous nitrogen injection) and with nitrided ferrovanadium.
O. I. Nokhrina, I. D. Rozhikhina, V. I. Dmitrienko, M. A. Golodova, Yu. A. Osipova   +4 more
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Exafs investigation of microalloyed steel

Scripta Metallurgica, 1984
Pour 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, F.E. Huggins, L.J. Cuddy, F.W. Lytle, R.B. Greegor   +4 more
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Niobium microalloying in rail steels

Materials Science and Technology, 2017
Rail steels rely primarily for their properties on wear and rolling-contact-fatigue resistance. These properties, together with toughness, can be optimised by implementing thermo-mechanical processing during rail manufacturing, assisted by controlled additions of strong carbide-forming microalloying elements. Niobium can be used at low concentrations,
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Study of cast microalloyed steels

Materials Science and Technology, 2003
AbstractImproved 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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