Results 321 to 330 of about 102,036 (378)

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.
F.K. Yan, Nairong Tao, K. Lu, Hao Wang
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Transformation to pearlite from hot-deformed and austenitized austenite

Materials Chemistry and Physics, 1987
Abstract The influence of hot deformation and austenization temperature on the subsequent isothermal transformation to pearlite was studied for steels 40Cr and 50CrV. The deformation of austenite above or below its recrystallization temperature may accelerate the subsequent pearlite transformation.
C.K. Yao, X.Y. Men, Y.M. Zhang
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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.
Kathy Lu, Nairong Tao, F.K. Yan
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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.
Robert J. Gaster, John G. Speer
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Austenite grain growth in alumina-forming austenitic steel

Journal of Materials Research, 2016
Abstract
Hailian Zhang, Qiang Huo, Qiuzhi Gao, Fu Qu   +3 more
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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 ...
J. H. Kim, Jung-Im Lee, T. H. Hwang, Youn Hwan Kim, Chang-Yong Kang   +4 more
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Ferritic-austenitic solidification mode in austenitic stainless steel welds

Metallurgical Transactions A, 1980
The macro-and microstructures of about fifty different stainless welds of the AISI/ AWS 300 series are analyzed. The results indicate that under conditions corresponding to a typical shielded metal arc (SMA) welding the welds with a ratio in the range 1.48≾Cr eq /Ni eq ≾1.95, where Ni
T. Takalo, N. Suutala, T. Moisio
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Thermal and Mechanical Stability of Austenite in Metastable Austenitic Stainless Steel

Metallurgical and Materials Transactions A, 2019
The roles of grain size, texture, strain, and strain rate on the thermal and mechanical stability of austenite in AISI 321 metastable austenitic stainless steel were studied. Ultrafine grain (UFG), fine grain (FG), and coarse grain (CG) specimens with average grain sizes of 0.24, 3, and 37 µm sizes, respectively, were investigated.
Zezhou Li, A.A. Tiamiyu, Shiteng Zhao, Akindele Odeshi, Jerzy A. Szpunar   +4 more
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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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Austenite texture and bainite/austenite orientation relationships in TRIP steel

Scripta Materialia, 2001
Abstract A bainitic medium carbon steel with 10–15 vol.% of retained austenite has been used to measure the texture of recrystallised and deformed austenite and of the corresponding bainite. The local orientations of bainite and retained austenite, and their orientation relationships, have been measured with an automated EBSD device mounted on a FEG ...
Bert Verlinden, Etienne Aernoudt, Ph. Bocher, E Girault   +3 more
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