Results 191 to 200 of about 8,807 (245)

Simulation of Austenite Grain Growth in Low-Alloyed Steels upon Austenitization

Physics of Metals and Metallography, 2023
A model has been developed that describes the grain growth upon austenitization, taking intoaccount the pinning of moving grain boundaries by carbonitride precipitates. The behavior of these precipitates is described using our previously developed approach for predicting the evolution of carbonitride particles.
I. I. Gorbachev, E. I. Korzunova, V. V. Popov, D. M. Khabibulin, N. V. Urtsev   +4 more
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Strengthening austenitic steels by using nanotwinned austenitic grains

Scripta Materialia, 2012
Abstract A novel strategy for strengthening austenite steels is introduced by using the unique strengthening effect of nanoscale twins. Austenite grains containing multiple nanoscale twins can be strengthened to a yield strength of a few GPa with very high work-hardening rates.
K. Lu, F.K. Yan, H.T. Wang, N.R. Tao
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Formation of austenite from a mixture of bainitic ferrite and austenite

Materials Chemistry and Physics, 1993
Abstract In this work, the isothermal reaustenitization on a chemically homogeneous weld metal has been investigated with the purpose of studying the general trend of the kinetics. For this reheated weld metal, bainitic ferrite can form from small-grain austenite.
J.R. Yang, C.Y. Huang
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Tensile ductility of nanotwinned austenitic grains in an austenitic steel

Scripta Materialia, 2014
Dynamic plastic deformation followed by recovery annealing of an austenitic stainless steel results in the formation of a hierarchical microstructure consisting of nanotwinned austenitic grains (>55 vol.%) mixed with nanograins and dislocation structures.
F.K. Yan, N.R. Tao, K. Lu
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Austenite grain growth in alumina-forming austenitic steel

Journal of Materials Research, 2016
Abstract
Qiuzhi Gao, Fu Qu, Hailian Zhang, Qiang Huo   +3 more
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Austenitization

2007
Abstract The first step in the hardening of steel is getting it hot enough to form austenite, from which martensite can form upon quenching. Not all steels have the same austenitization requirements, however. High-carbon wear-resistant steels, such as bearing and tool steels, require the presence of carbides during austenitization; plain
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Austenitization

1999
Abstract This chapter examines the structural changes that occur in high-carbon steels during austenitization. It describes the effect of heating time and temperature on the production of austenite and the associated transformation of ferrite and cementite in eutectoid, hypoeutectoid, and hypereutectoid steels.
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Recrystallization of austenite

Metallurgical Transactions A, 1980
A laboratory simulation of hot-rolling schedules, which employs a sequence of high-speed compressions performed over a range of temperatures, was used to determine the effects of composition and processing variables on the state of the austenite at several points in the hot-rolling procedure.
L. J. Cuddy, J. J. Bauwin, J. C. Raley
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Austenitizing in Steels

2013
AbstractAustenitization refers to heating into the austenite phase field, during which the austenite structure is formed. This article highlights the purpose of austenitization, and reviews the mechanism and importance of thermodynamics and kinetics of austenite structure using an iron-carbon binary phase diagram.
John G. Speer, Robert J. Gaster
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Effect of austenite on mechanical properties in high manganese austenitic stainless steel with two phase of martensite and austenite

Metals and Materials International, 2015
The effect of the austenite phase on mechanical properties of austenitic stainless steels was investigated using specimens with different volume fractions of retained and reversed austenite. Stainless steels with dual-phase coexisting martensite and austenite were successfully synthesized by deformation and reverse transformation treatment in the cold ...
Y. H. Kim, J. H. Kim, T. H. Hwang, J. Y. Lee, C. Y. Kang   +4 more
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