Processing, microstructures and mechanical properties of ultra-high strength steel sheet

被引：8

作者：

Chen, Liqing ^{[1
]}

Huang, Jianguo ^{[1
]}

Zhao, Yang ^{[2
]}

Di, Hongshuang ^{[1
]}

Zhu, Fuxian ^{[1
]}

机构：

[1] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China

[2] Northeastern Univ, Sch Met & Mat, Shenyang 110819, Peoples R China

来源：

11TH INTERNATIONAL CONFERENCE ON TECHNOLOGY OF PLASTICITY, ICTP 2014 | 2014年 / 81卷

关键词：

Ultra-high strength steel; Thermo-mechanical controlled processing; Microstructures; Mechanical properties; RAIL STEEL;

D O I：

10.1016/j.proeng.2014.09.131

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An ultra-high strength steel sheet with a tensile strength over 1500 MPa and excellent low-temperature impact toughness was obtained by either using controlled rolling plus air cooling (CR+AC) or laboratorial thermo-mechanical controlled processing (TMCP). The effects of CR+AC and the TMCP processes were then examined on the microstructures and mechanical properties of this steel sheet. The results showed that by using CR+AC technology a uniformly distributed bainitic ferrite microstructure could be produced in this steel sheet under the appropriate reheating and rolling condition. By using TMCP technology, a lath bainite and martensitic microstructure with superior mechanical properties could also be generated. A microstructural analysis was made to interprete the strengthening-toughening mechanisms in association with the processes. (C) 2014 Published by Elsevier Ltd.

引用

页码：84 / 89

页数：6

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