Thermal stability of retained austenite in TRIP steels studied by synchrotron X-ray diffraction during cooling

被引：511
作者：
van Dijk, NH
Butt, AM
Zhao, L
Sietsma, J
Offerman, SE
Wright, JP
van der Zwaag, S
机构：
[1] Delft Univ Technol, Fac Sci Appl, NL-2629 JB Delft, Netherlands
[2] Delft Univ Technol, Dept Mat Sci & Engn, NL-2628 AL Delft, Netherlands
[3] Netherlands Inst Met Res, NL-2628 AL Delft, Netherlands
[4] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[5] Delft Univ Technol, Dept Aerosp Engn, NL-2629 HS Delft, Netherlands
来源：
ACTA MATERIALIA | 2005年 / 53卷 / 20期
关键词：
TRIP steel; synchrotron radiation; martensitic phase transformation; metastable phases;
D O I：
10.1016/j.actamat.2005.08.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have performed in situ X-ray diffraction measurements at I synchrotron source ill order to study the thermal stability of the retained austenite phase in transformation induced plasticity steels during cooling from room temperature to 100 K. A powder analysis of' the diffraction data. reveals a inartensitic transformation of part of' the retained austenite during cooling. The fraction of austenite that transforms during cooling is found to depend strongly oil the bainitic holding time and the composition of the steel. It is shown that that austenite grains with a lower average carbon concentration have a lower stability during cooling. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：5439 / 5447
页数：9
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