Thermal stability of retained austenite in TRIP steels studied by synchrotron X-ray diffraction during cooling
Thermal stability of retained austenite in TRIP steels studied by synchrotron X-ray diffraction during cooling
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DOI：
10.1016/j.actamat.2005.08.017
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发表时间：
2005-12-01
期刊：
影响因子：
9.4
通讯作者：
van der Zwaag, S
中科院分区：
文献类型：
--
作者：
van Dijk, NH;Butt, AM;van der Zwaag, S
我们在 I 同步加速器源上进行了原位 X 射线衍射测量，以研究相变诱导塑性钢从室温冷却至 100 K 期间残留奥氏体相的热稳定性。对衍射数据进行粉末分析。揭示了冷却过程中部分残余奥氏体的非马氏体转变。发现在冷却过程中转变的奥氏体分数很大程度上取决于贝氏体保持时间和钢的成分。结果表明，平均碳浓度较低的奥氏体晶粒在冷却过程中的稳定性较低。 (c) 2005 Acta Materialia Inc. 由 Elsevier Ltd 出版。保留所有权利。
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.