Effect of Calcium Addition on the Rolled Microstructure of a Kind of HSLA Steel

DOI

10.2991/aeece-15.2015.53How to use a DOI?

Keywords

calcium, rolled microstructure, HSLA steel, bainite, strength and toughness

Abstract

The rapid development of the large steel structure brings a great opportunity for steelmaking industry. The steel plates not only have the strength and toughness but also can withstand the high energy input welding. Using the calcium oxide of high melting-point and high stability to pin the grain boundaries is an effective method to improve the welding performance of the structure steel. Calcium was added into molten steel in the form of Ca-Si alloy using the special process in the experiment. A kind of HSLA steel containing Ca was prepared by means of the vacuum induction melting and controlled rolling and controlled cooling experiments. The effect of calcium addition on the rolled microstructure of HSLA steel was analysed. The results show that the addition of Ca elements has a significant effect on the microstructure of the rolled steel. The rolled microstructure of the experimental steel consists of polygonal ferrite and granular bainite and small amount of pearlite. The emergence of bainite is favorable to the strength and toughness of the experimental steel.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yan Liu
AU  - Kai Wang
AU  - Jianming Wang
AU  - Chunlin He
PY  - 2015/09
DA  - 2015/09
TI  - Effect of Calcium Addition on the Rolled Microstructure of a Kind of HSLA Steel
BT  - Proceedings of the International Conference on Advances in Energy, Environment and Chemical Engineering
PB  - Atlantis Press
SP  - 263
EP  - 266
SN  - 2352-5401
UR  - https://doi.org/10.2991/aeece-15.2015.53
DO  - 10.2991/aeece-15.2015.53
ID  - Liu2015/09
ER  -