Results 321 to 330 of about 103,556 (374)

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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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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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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Reverse transformation mechanism of martensite to austenite in a metastable austenitic alloy

Materials Science and Engineering: A, 2009
The reverse transformation of martensite to austenite in a metastable austenitic alloy was investigated during continuous heating followed by isothermal holding. The diffusionless reverse transformation occurred irrespective of heating rate during continuous heating, resulting in lath-shaped austenite with high dislocation density.
Seok-Jae Lee, Yong Min Park, Young Kook Lee   +2 more
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Effect of hydrogen on austenite to martensite transformation in an austenitic stainless steel [PDF]

Journal of Materials Science Letters, 1987
Effet de l'hydrogene sur la temperature de transformation. Le chargement en hydrogene se fait selon une nouvelle procedure a basse pression, de telle facon que la microstructure ne soit pas affectee durant l'introduction du gaz. On montre que l'hydrogene n'a aucun effet significatif sur la temperature de transformation M S et sur la quantite de ...
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On the austenite stability of cryogenic Ni steels: microstructural effects: a review

Journal of Materials Science, 2021
W. X. Zhang, Y. Z. Chen, Y. Cong, Y. H. Liu, F. Liu   +4 more
semanticscholar   +1 more source

Mechanical stabilisation of austenite

Materials Science and Technology, 2006
A theory has been developed for the mechanical stabilisation of plastically deformed austenite by balancing the force which drives the transformation interface against the resistance from dislocation debris in the austenite. The work has been used to explain why very large strains are required to mechanically stabilise certain stainless steels, and ...
H. K. D. H. Bhadeshia, H.-S. Wang, S. Chatterjee, Jer-Ren Yang   +3 more
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The decomposition of austenite

2004
The final microstructures of steels, and consequently their service properties, are determined principally by solid state transformations. The present chapter discusses the essential features of the mechanisms involved.
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