Effects of minor Sr addition on solidified structure and mechanical properties of Mg-Y-Cu alloy reinforced by long period ordered structure

DOI

10.2991/ic3me-15.2015.12How to use a DOI?

Keywords

Sr, Mg-Y-Cu alloy, solidified structure, mechanical properties, long period ordered structure

Abstract

Solidified structure and mechanical properties of Mg97Y2Cu1 alloy reinforced by long period ordered structure with 0-0.3%wt Sr addition were investigated. The results indicate that the addition of Sr ranging from 0.1% to 0.2%, solidified structure of the alloy refines and homogenizes gradually. When the Sr addition increases to 0.3%, the alloy is over-modified. Mg17Sr2 phase forms in the alloy with the addition of 0.2% and 0.3% Sr. With the increase of Sr addition, supercooling degree and mechanical properties of the alloy increases firstly, and then decreases. After adding 0.2% Sr to the alloy, the supercooling degree increases 6.7 °C in max. Mechanical properties of the alloy with 0.2% Sr addition is the best, the tensile strength and elongation of the alloy reach 215 MPa and 9.19%, which are increased by up to 24% and 58%, respectively, compared with the alloy without Sr addition.

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  - Sen Zhang
AU  - Quan Zhou
AU  - Hao Zhang
PY  - 2015/08
DA  - 2015/08
TI  - Effects of minor Sr addition on solidified structure and mechanical properties of Mg-Y-Cu alloy reinforced by long period ordered structure
BT  - Proceedings of the 3rd International Conference on Material, Mechanical and Manufacturing Engineering
PB  - Atlantis Press
SP  - 67
EP  - 73
SN  - 2352-5401
UR  - https://doi.org/10.2991/ic3me-15.2015.12
DO  - 10.2991/ic3me-15.2015.12
ID  - Zhang2015/08
ER  -