Mechanical behavior of CrMo steel with tempered martensite and ferrite-bainite-martensite microstructure

被引：48

作者：

Abdollah-Zadeh, A. ^{[1
]}

Salemi, A. ^{[1
]}

Assadi, H. ^{[1
]}

机构：

[1] Tarbiat Modares Univ, Dept Mat Engn, Tehran, Iran

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 483-84卷

关键词：

42CrMo4 steel microstructure; Ferrite-bainite-martensite; cleavage fracture;

D O I：

10.1016/j.msea.2006.12.179

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This study is concerned with a correlation between the microstructure and mechanical properties of 42CrMo4 steel, with two different microstructures. Quench tempering and step quenching heat treatments produced tempered martensite and ferrite-bainite-martensite (FBM) microstructures, respectively. Tensile test results indicated a yield-drop effect in FBM microstructure with ferritic matrix. This was attributed to dislocation generation in ferrite phase during bainitic and martensitic transformations. Fractographic investigations indicated transgranular cleavage and microvoid in FBM and tempered martensite microstructures, respectively. This can be attributed to high density of interphase boundary in FBM microstructure and carbide formation in tempered martensite microstructure. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：325 / 328

页数：4

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