Microstructure and tensile properties of a 0.20C-4.86Mn steel after short intercritical-annealing times

被引：11
作者：
Yan Li [1 ]
Fei Huyan [2 ]
Wei Ding [3 ]
机构：
[1] Inner Mongolia Univ Sci & Technol, Bayan Obo Multimet Resource Comprehens Utilizat K, Baotou, Peoples R China
[2] KTH Royal Inst Technol Stockholm, Dept Mat Sci & Engn, Stockholm, Sweden
[3] Inner Mongolia Univ Sci & Technol, Sch Mat & Met, Baotou 014010, Peoples R China
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2019年 / 35卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Medium Mn steel; intercritical annealing; retained austenite; martensitic transformation; tensile properties; INDUCED PLASTICITY STEELS; MECHANICAL-PROPERTIES; TRIP STEELS; TRANSFORMATION; MARTENSITE; AUSTENITE; STRENGTH; BEHAVIOR;
D O I：
10.1080/02670836.2018.1550864
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This work studies the microstructure and tensile properties of a cold-rolled Fe-0.20C-4.86Mn (mass %) steel after short intercritical annealing (IA) times using scanning and transmission electron microscopy, and uniaxial tensile tests. The short IA time is applied to represent the process characteristics of the industrial continuous annealing line. The experimental results show that IA temperature has a strong influence on the final microstructure and tensile properties while IA time has less. The fractions of retained austenite are much higher after IA at 650 and 675 degrees C than the other IA temperatures, and thus improving elongation. Simulations using the DICTRA software and constitutive modelling are further performed to assist the understanding of the microstructure evolution and stress-strain curves.
引用
收藏
页码：220 / 230
页数：11
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