Effect of element composition on microstructure pattern of Mg-RE alloys

DOI

10.2991/icadme-15.2015.75How to use a DOI?

Keywords

Mg-RE alloys, element composition, microstructure pattern

Abstract

The microstructure of as cast Mg-RE (Mg-Gd, Mg-Y, Mg-Gd-Y and Mg-Gd-Y-Nd) alloys and that after heat treatment were investigated. The results show that the primary solidified precipitated phases of both Mg-Gd and Mg-Y binary alloy were coarse aberration eutectic microstructure pattern. For Mg-Gd-Y ternary alloy, a small amount of lamellar eutectic microstructure was formed while that mainly was coarse coefficient eutectic microstructure in matrix. In Mg-Gd-Y-Nd quaternary alloy, the as-cast microstructure was composed of -Mg matrix and -Mg+Mg5 (Gd, Y, Nd) phase which had lamellar structure on grain boundaries. Compared with Mg-Gd, Mg-Y, Mg-Gd-Y alloy, the remaining second phase particles in Mg-Gd-Y-Nd alloy was more dispersed after heat treatment.

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  - Yongjun Li
AU  - Xinggang Li
AU  - Minglong Ma
AU  - Guoliang Shi
PY  - 2015/10
DA  - 2015/10
TI  - Effect of element composition on microstructure pattern of Mg-RE alloys
BT  - Proceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering
PB  - Atlantis Press
SP  - 375
EP  - 378
SN  - 2352-5401
UR  - https://doi.org/10.2991/icadme-15.2015.75
DO  - 10.2991/icadme-15.2015.75
ID  - Li2015/10
ER  -