Article history: Two-sided and simultaneous laser shock peening impacts is considered as a novel surface treatment tech- Received 21 November 2015 nology for the turbine blade and thin-walled component. In this paper, tensile properties of Mg–Al–Mn Received in revised form 15 January 2016 alloy specimens with different sheet thickness under two kinds of laser shock peening strategies were Accepted 4 February 2016 investigated, and an overlapping three-dimension axisymmetric numerical model was developed to ana- Available online 6 February 2016 lyze the effects of sheet thickness on residual stress distributions. Meanwhile, special attentions were paid to the in-depth microstructural evolution as a function of sheet thickness. Results showed that sheet Keywords: thickness had an important inﬂuence on the tensile properties of Mg–Al–Mn alloy, and the generated Mg–Al–Mn alloy residual stress distribution and grain arrangement were two important factors. The corresponding inﬂu- Laser shock peening ence mechanism of sheet thickness on the tensile properties of Mg–Al–Mn alloy was also presented, and Stress–strain curve the optimal thickness of Mg–Al–Mn alloy sheet may be 4 mm or more. Residual stress distribution Grain arrangement © 2016 Elsevier B.V. All rights reserved. Ultimate tensile strength 1. Introduction fatigue durability , tensile strength , and other
Applied Surface Science – Elsevier
Published: Apr 30, 2016
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