Tensile properties, residual stress distribution and grain arrangement as a function of sheet thickness of Mg–Al–Mn alloy subjected to two-sided and simultaneous LSP impacts

Tensile properties, residual stress distribution and grain arrangement as a function of sheet... 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 [7], tensile strength [8], and other http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Surface Science Elsevier

Tensile properties, residual stress distribution and grain arrangement as a function of sheet thickness of Mg–Al–Mn alloy subjected to two-sided and simultaneous LSP impacts

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Publisher
Elsevier
Copyright
Copyright © 2016 Elsevier B.V.
ISSN
0169-4332
eISSN
1873-5584
D.O.I.
10.1016/j.apsusc.2016.02.045
Publisher site
See Article on Publisher Site

Abstract

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 [7], tensile strength [8], and other

Journal

Applied Surface ScienceElsevier

Published: Apr 30, 2016

References

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