Ultra Fine-grained 6wt% Manganese TRIP Steel

被引：20
|
作者：
Lee, Seawoong [1 ]
Lee, Kyooyoung [2 ]
De Cooman, B. C. [1 ]
机构：
[1] Pohang Univ Sci, Pohang, South Korea
[2] POSCO, Tech Res Lab, Gwangyang, South Korea
来源：
PRICM 7, PTS 1-3 | 2010年 / 654-656卷
关键词：
Ultra-fine grain; retained austenite; manganese; intercritical annealing; MECHANICAL-PROPERTIES;
D O I：
10.4028/www.scientific.net/MSF.654-656.286
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Ultra-fine grained TRIP steels (UFG-TRIP) containing 6wt%Mn were produced by intercritical annealing. An ultra-fine grained microstructure with a grain size less than 1 mu m was obtained. The formation mechanism of the high volume fraction of retained austenite was investigated by dilatometry, XRD and magnetic saturation. The fraction of retained austenite was strongly dependent on the annealing temperature. The tensile properties were also found to be strongly influenced by the annealing temperature with poorer mechanical properties being observed at higher annealing temperatures. It was found that the stabilization of the retained austenite was both a composition and size-effect, made possible by the grain refinement due to the reversely transformed martensite.
引用
收藏
页码：286 / +
页数：2
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