Paper Title:
Effect of Ultrasonic Surface Peening on Fatigue Property of 7B04 High Strength and Toughness Aluminum Alloy
  Abstract

This paper discusses the influence of ultrasonic surface peening on the fatigue property of 7B04 high strength and toughness aluminum alloy. The results showed that a nano-layer of 10-20 μm was formed after ultrasonic surface peening. This nano-layer had a gradient structure with grain size of 10 to 50nm. Further, the ultrasonic surface peening process created residual compressive stress of 200MPa in this nano-layer. This stress caused micro surface cracks to be compressed or closed . Consequently, after ultrasonic surface peening the fatigue life of 7B04 alloy was extended to 5 times.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
1892-1895
DOI
10.4028/www.scientific.net/MSF.654-656.1892
Citation
Q. F. Zhu, Z. M. Sun, T. D. Ma, V. A. Klimenov, V. Borozna, B. H. Zhu, "Effect of Ultrasonic Surface Peening on Fatigue Property of 7B04 High Strength and Toughness Aluminum Alloy", Materials Science Forum, Vols. 654-656, pp. 1892-1895, 2010
Online since
June 2010
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Price
$32.00
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