Effect of Stress Ratio on the Fatigue Behavior of a Friction Stir Processed Cast Al-Si-Mg Alloy
Abstract
The effect of friction stir processing (FSP) on the fatigue life of a cast Al-7Si-0.6 Mg alloy at stress ratios of R = 0 and R = -1 was evaluated. Two types of specimen geometry were used for the FSPed condition, through thickness processed and partial thickness processed. At R = 0, the microstructural refinement enhanced the fatigue life by a factor of 15, whereas at R = -1 the improvement in fatigue life was 5-fold. In light of these observations, various closure mechanisms were examined.
Recommended Citation
S. Jana et al., "Effect of Stress Ratio on the Fatigue Behavior of a Friction Stir Processed Cast Al-Si-Mg Alloy," Scripta Materialia, Elsevier, Nov 2009.
Department(s)
Materials Science and Engineering
Sponsor(s)
National Science Foundation (U.S.)
Keywords and Phrases
Cast Aluminum Alloys; Friction Stir Processing; Fatigue; Microstructure
International Standard Serial Number (ISSN)
1359-6462
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2009 Elsevier, All rights reserved.
Publication Date
01 Nov 2009
