Microstructure and mechanical properties of automobile beam steels produced by EAF-CSP process

Zhengzhi Zhao; Yonglin Kang; Hao Yu

doi:10.1016/S1005-8850(06)60103-5

Volume 13 Issue 6

Dec. 2006

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Abstract

International Journal of Minerals, Metallurgy and Materials > 2006 > 13(6): 508-511. > DOI: 10.1016/S1005-8850(06)60103-5

Zhengzhi Zhao, Yonglin Kang, and Hao Yu, Microstructure and mechanical properties of automobile beam steels produced by EAF-CSP process, J. Univ. Sci. Technol. Beijing , 13(2006), No. 6, pp.508-511. https://dx.doi.org/10.1016/S1005-8850(06)60103-5

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Materials

Microstructure and mechanical properties of automobile beam steels produced by EAF-CSP process

Author Affilications

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

Funds:

This work was financially supported by the National Natural Science Foundation of China (No. 50334010).

Received: 11 February 2006;

Graphical Abstract

Abstract

Abstract

The microstructure, mechanical properties, and misorientation of automobile beam steels produced by EAF-CSP process were studied using optical microscopy (OM) and electron back-scattered diffraction (EBSD). It is shown that the microstructure of strips is mainly polygonal ferrite, and the average grain size is about 5-8 μm. The electron back-scattered diffraction results show that grain boundaries in ferrite are basically high-angle grain boundaries without remarkable preferred orientation. Hot strips of automobile beam steels possess a good combination of strength and plasticity because of their fine microstructures and low quantity of impurities.
- steel,
- CSP,
- microstructure,
- mechanical property,
- electron back-scattered diffraction

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