A Special TMCP Used to Develop a 800MPa Grade HSLA Steel

Chengjia Shang; Xuemin Wang; Xinlai He; Shanwu Yang; Yi Yuan

Volume 8 Issue 3

Sep. 2001

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Abstract

International Journal of Minerals, Metallurgy and Materials > 2001 > 8(3): 224-228.

Chengjia Shang, Xuemin Wang, Xinlai He, Shanwu Yang, and Yi Yuan, A Special TMCP Used to Develop a 800MPa Grade HSLA Steel, J. Univ. Sci. Technol. Beijing , 8(2001), No. 3, pp.224-228.

Cite this article as:

Chengjia Shang, Xuemin Wang, Xinlai He, Shanwu Yang, and Yi Yuan, A Special TMCP Used to Develop a 800MPa Grade HSLA Steel, J. Univ. Sci. Technol. Beijing , 8(2001), No. 3, pp.224-228.

Cite this article as:

Chengjia Shang, Xuemin Wang, Xinlai He, Shanwu Yang, and Yi Yuan, A Special TMCP Used to Develop a 800MPa Grade HSLA Steel, J. Univ. Sci. Technol. Beijing , 8(2001), No. 3, pp.224-228.

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Materials

A Special TMCP Used to Develop a 800MPa Grade HSLA Steel

Author Affilications

Material Science and Engineering School, University of Science and Technology Beijing, Beijing, 100083, China

Received: 09 November 2000; Available Online: 16 June 2021

Graphical Abstract

Abstract

Abstract

The effect of relaxation after finished rolling on structures and properties of four microalloyed steel with different content of Nb and Ti was investigated. By alloy designing and control rolling + relaxation-precipitation-control phase trail storm ati on (RPC) process, a new 800 MPa grade HSLA plate steel could be obtained, the microstructure is composite ultra-fine lath bainite/martensite. The tempering process and mechanical properties of this kind of HSLA steel were investigated. The yield strength can achieve 800 MPa, and the ductility and impact toughness is satisfied.
- HSLA steel,
- microstructure and mechanical properties,
- TMCP（thermomechanical control process）,
- RPC

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