On the measurement of the nanohardness of the constitutive phases of TRIP-assisted multiphase steels

被引：138
|
作者：
Furnémont, Q
Kempf, M
Jacques, PJ
Göken, M
Delannay, F
机构：
[1] Catholic Univ Louvain, Dept Mat Sci & Proc, PCIM, B-1348 Louvain, Belgium
[2] Univ Saarland, Dept Mat Sci, D-66041 Saarbrucken, Germany
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2002年 / 328卷 / 1-2期
关键词：
nanohardness; multiphase microstructure; TRIP-assisted multiphase steels;
D O I：
10.1016/S0921-5093(01)01689-6
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The nanohardness of the phases present in the microstructure of two TRIP (for TRansformation Induced Plasticity)-assisted multiphase steels differing by their silicon content was measured by nanoindentation in an atomic force microscope. It is observed that the softest phase in both steels is the ferritic matrix, followed by bainite, austenite and martensite. It is also shown that the silicon content of the steel grades is responsible for an increase of the hardness of the ferritic matrix due to solid solution strengthening. Finally, the influence of the preparation mode of the surface prior to the nanoindentation measurements has been investigated. An electropolishing stage after mechanical polishing is acceptable to allow valuable nanohardness measurements. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：26 / 32
页数：7
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