Nanoindentation investigation on the mechanical stability of individual austenite grains in a medium-Mn transformation-induced plasticity steel

被引：131
|
作者：
He, B. B. [1 ]
Huang, M. X. [1 ]
Liang, Z. Y. [1 ]
Ngan, A. H. W. [1 ]
Luo, H. W. [2 ]
Shi, J. [2 ]
Cao, W. Q. [2 ]
Dong, H. [2 ]
机构：
[1] Univ Hong Kong, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China
[2] Cent Iron & Steel Res Inst, Beijing 100081, Peoples R China
来源：
SCRIPTA MATERIALIA | 2013年 / 69卷 / 03期
关键词：
Third-generation AHSS; Medium-Mn TRIP; Nanoindentation; Martensitic transformation; Single austenite grain; MARTENSITIC-TRANSFORMATION; RETAINED AUSTENITE; BOUNDARIES; BEHAVIOR;
D O I：
10.1016/j.scriptamat.2013.03.030
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The mechanical stability of individual retained austenite grains is studied by nanoindentation combined with electron backscattered diffraction, scanning electron microscope, energy-dispersive X-ray spectroscopy and transmission electron microscopy. The average hardness of retained austenite and ferrite is 7.7 and 3.4 GPa, respectively. The large scatter of hardness distribution in retained austenite may be due to the varied stability and boundary structure of different austenite grains. The mechanical stability of retained austenite increases with Mn content. (c) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：215 / 218
页数：4
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