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Effect of Warm Laser Shock Peening on the Tensile Strength and Ductility of Aluminum Alloys

[+] Author Affiliations
Chang Ye, Dong Lin, Yiliang Liao, Gary J. Cheng

Purdue University, West Lafayette, IN

Paper No. MSEC2012-7371, pp. 533-538; 6 pages
doi:10.1115/MSEC2012-7371
From:
  • ASME 2012 International Manufacturing Science and Engineering Conference collocated with the 40th North American Manufacturing Research Conference and in participation with the International Conference on Tribology Materials and Processing
  • ASME 2012 International Manufacturing Science and Engineering Conference
  • Notre Dame, Indiana, USA, June 4–8, 2012
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-5499-0
  • Copyright © 2012 by ASME

abstract

In this study, aluminum alloy 7075 (AA 7075) is processed by WLSP and compared with LSP at room temperature (RT-LSP). The microstructure of AA 7075 after processing is characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). Tensile test and hardness test were carried out to investigate the effect of WLSP to material strength and ductility. It has been found that highly dense nanoscale precipitate particles are generated after WLSP. These nanoscale precipitate particles effectively block dislocations and thus increase the material strength.

Copyright © 2012 by ASME

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