Effect of Pre-stretching Process on Quenching Residual Stress of EW75 Magnesium Alloy

DOI

10.2991/icadme-15.2015.23How to use a DOI?

Keywords

EW75 magnesium alloy, Pre-stretching; microstructure, mechanical properties, residual stress

Abstract

This paper studies the effect of pre-stretching process on the residual stress and mechanical properties of EW75 magnesium alloy by OM and mechanical tests, etc. The results show that the bend deformation caused by the release of quench residual stress increases after machining into the pre-stretching sample. For the pre-stretching rate of 1.0%,1.5%,2.0% and 2.5%, the strain stress curves are similar and rebound phenomenon happens after unloading and varying degrees of twin deformation happens both in the surface and the core. When the deformation rate is 1%, the ultimate tensile strength of the material increases 20%, the yield strength increases 43%, while the fracture elongation reduced 30% subsequently. As the pre-stretching rate continues to increase, the yield strength, ultimate tensile strength and elongation are little changing.

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  - Xinggang Li
AU  - Hongbin Liao
AU  - Minglong Ma
AU  - Jiawei Yuan
AU  - Ting Li
AU  - Dongjie Chen
AU  - Kui Zhang
PY  - 2015/10
DA  - 2015/10
TI  - Effect of Pre-stretching Process on Quenching Residual Stress of EW75 Magnesium Alloy
BT  - Proceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering
PB  - Atlantis Press
SP  - 109
EP  - 113
SN  - 2352-5401
UR  - https://doi.org/10.2991/icadme-15.2015.23
DO  - 10.2991/icadme-15.2015.23
ID  - Li2015/10
ER  -