Influence of Carbide Precipitation and Dissolution on the Microstructure of Ultra-Fine-Grained Intercritically Annealed Medium Manganese Steel

被引：42
作者：
Lee, Sangwon [1 ]
De Cooman, Bruno C. [2 ]
机构：
[1] Korea Inst Mat Sci, Metall Mat Div, Titanium Dept, Chang Won, South Korea
[2] Pohang Univ Sci & Technol POSTECH, Grad Inst Ferrous Technol, Mat Design Lab, Pohang 51508, South Korea
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2016年 / 47A卷 / 07期
关键词：
MN MULTIPHASE STEEL; TENSILE BEHAVIOR; MECHANICAL-PROPERTIES; TEMPERATURE; KINETICS;
D O I：
10.1007/s11661-016-3507-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of cementite precipitation and dissolution on the formation of the carbide-free, ultra-fine-grained, ferrite + austenite microstructure of medium manganese steel was analyzed. During heating to the intercritical temperature, cementite nucleates at low-angle lath martensite boundaries, austenite subsequently nucleates at ferrite/cementite boundaries, and the cementite is gradually replaced by the growing austenite grains. The intercritical austenite carbon is therefore due to cementite dissolution, rather than carbon partitioning between ferrite and austenite.
引用
收藏
页码：3263 / 3270
页数：8
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