Mechanical stabilization of retained austenite in TRIP-assisted multiphase steels

被引：0
|
作者：
Godet, S [1 ]
Delannay, F [1 ]
Jacques, PJ [1 ]
机构：
[1] Univ Catholique Louvain, B-1348 Louvain, Belgium
来源：
HEAT TREATING, VOLS 1 AND 2, PROCEEDINGS | 2000年
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D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
TRIP-assisted multiphase steels exhibit strength and ductility properties that are unique in low-alloy steels. This behaviour is attributed to the dynamic work-hardening provided by the transformation of metastable retained austenite into martensite during straining. Usually two main factors are thought to influence the stability of austenite: its chemical composition and its grain size. This work characterises the effect of a third parameter on its stability: prior deformation and high temperature work-hardening of austenite. Specimens were strained into the intercritical temperature range and then submitted to a bainitic transformation dwell. Typical multiphase microstructure were obtained. The work-hardening behaviour of the steels grades strained at room temperature was found to be enhanced by the prior deformation of austenite.
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页码：535 / 538
页数：4
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