Effects of the small amount of ferrite in bainite laths on the strength and toughness of high strength steels

被引：1
作者：
Song, Feng-Yu [1 ]
Zhang, Peng-Yan [2 ]
Wang, Ping [1 ]
Zhu, Fu-Xian [2 ]
机构：
[1] The Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University
[2] State Key Laboratory of Rolling and Automation, Northeastern University
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2014年 / 35卷 / 05期
关键词：
Bainite; High strength steels; Impact toughness; Mechanical properties; Microstructure;
D O I：
10.3969/j.issn.1005-3026.2014.05.018
中图分类号：
学科分类号：
摘要：
A low cost high strength steel was studied by TMCP processing under different cooling modes, the microstructures and mechanical properties were investigated by the optical microscope, tensile testing machine and shock testing machine respectively. The results showed that the transformation strengthen and insulation treatment in two phase region can bring a small amount of ferrite into the tested steel, in which the original microstructure is mainly lath bainite, that leads to high strength and high shock toughness of the tested steel. Under the similar conditions, the tensile strength, yield strength and yield ratio increase while the elongation and reduction of area decrease with the decrease of the final cooling temperature.
引用
收藏
页码：686 / 689
页数：3
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