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

DOI

10.2991/aeece-15.2015.54How to use a DOI?

Keywords

magnesium, rolled microstructure, HSLA steel, heat affected zone, bainite

Abstract

A new technology to obtain a fine-structured and high-toughness HAZ of HSLA steel for high heat input welding is developed using metallurgical thermodynamics, physical chemistry of metallurgy and material processing methods synthetically in this study. The thermal stability second phase particles which would not be dissolved or aggregated at high temperature will be expected by means of adding magnesium into the steel in the form of Mg-Zr alloy. A kind of HSLA steel containing Mg was prepared by means of the vacuum induction melting and controlled rolling and controlled cooling experiments. The effect of magnesium addition on the rolled microstructure of HSLA steel was analysed. The results show that the cast microstructure has been changed after rolling and the deformed austenite. The rolled microstructure of the experimental steel mainly consists of polygonal ferrite and granular bainite and small amount of pearlite. Compared with the original steel, there is bainite presenting in the experimental steel after adding 5 wt% Mg, which is favorable to the mechanical properties of the rolled 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 Magnesium 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  - 267
EP  - 270
SN  - 2352-5401
UR  - https://doi.org/10.2991/aeece-15.2015.54
DO  - 10.2991/aeece-15.2015.54
ID  - Liu2015/09
ER  -