Microstructure and mechanical behavior of cold-rolled CMnAlSi TRIP-aided steel sheets

被引：3

作者：

Jing Cai-nian ^{[1
,2
]}

Wang Ming-gang ^{[1
]}

Wang Zuo-cheng ^{[2
]}

Tan Qi-zhong ^{[1
]}

Kim, Sung-Joon ^{[3
]}

机构：

[1] Shandong Jianzhu Univ, Sch Mat Sci & Engn, Jinan 250101, Peoples R China

[2] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Peoples R China

[3] Korea Inst Machinery & Mat, Chang Won 641010, South Korea

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2009年 / 19卷

关键词：

transformation induced plasticity(TRIP); isothermal bainitic transformation (IBT); mechanical properties; retained austenite stability; TRANSFORMATION-INDUCED PLASTICITY; RETAINED AUSTENITE; SI; AL; PHOSPHORUS; STABILITY; BAINITE; FERRITE; CU;

D O I：

10.1016/S1003-6326(10)60112-4

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The microstructure, mechanical properties and retained austenite stability of CMnAlSi-TRIP steels were investigated. Optical microscopy and X-ray diffractometry were used to analyze the microstructure, volume fraction and carbon concentration of retained austenite, while the tensile tests were performed to study the retained austenite stability against strain-induced martensitic transformation. The results show that the mechanical properties of the CMnAlSi cold-rolled TRIP-aided steels fabricated by proper heat treatment display good combination of strength and ductility after isothermal bainitic transformation (IBT) treatment at 420-450 degrees C for 60-120 s. The austenite transformation kinetics is influenced significantly by the IBT temperature, and the high mechanical stability of retained austenite, governed by its carbon concentration, and determines high strain hardening during deformation.

引用

页码：S579 / S582

页数：4

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