Effect of Magnesium Addition on the Inclusions Composition in the Cast Microstructure of HSLA Steel

DOI

10.2991/icmsa-15.2015.158How to use a DOI?

Keywords

Magnesium, Cast Microstructure, Inclusions Composition, HSLA Steel.

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 magnesium 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. The effect of magnesium addition on the morphology and composition of the inclusions in the cast microstructure of HSLA steel was analyzed. The results show that the distribution of the inclusions is more dense and uniform with respect to the raw steel, and the size of the inclusions is smaller than the ones in the raw steel after adding magnesium elements. Adding magnesium element in different amounts can lead to the large difference in the composition of the inclusions. The main components of the inclusions formed are magnesium oxides and the composite inclusions, as well as the oxides, sulfides and composite inclusions of the other metallic elements. And most magnesium inclusions are spherical and ellipsoidal.

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  - Yang Liu
AU  - Jian-Ming Wang
PY  - 2014/06
DA  - 2014/06
TI  - Effect of Magnesium Addition on the Inclusions Composition in the Cast Microstructure of HSLA Steel
BT  - Proceedings of the 2015 International Conference on Material Science and Applications
PB  - Atlantis Press
SP  - 856
EP  - 860
SN  - 2352-541X
UR  - https://doi.org/10.2991/icmsa-15.2015.158
DO  - 10.2991/icmsa-15.2015.158
ID  - Liu2014/06
ER  -