Journal
SURFACE & COATINGS TECHNOLOGY
Volume 204, Issue 24, Pages 3947-3953Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2010.03.015
Keywords
Laser shock processing (LSP); Mg alloy; Residual stress; Stress corrosion cracking (SCC)
Funding
- National Nature Science Foundation of China [50735001]
- High-tech project of Jiangsu Province, China [BG2007033]
Ask authors/readers for more resources
Laser shock processing (LSP) is a new technique for strengthening metals. The effects of LSP on the stress corrosion cracking (SCC) susceptibility of AZ31B magnesium (Mg) alloy were investigated. Water-immersed specimens of AZ31B magnesium alloy were shocked by Q-switched Nd: glass laser with a wavelength of 1064 nm. A fine-grained structure with an average sub-grain size of 5.81 mu m was obtained after four laser impacts. Residual stress distribution as a function of depth was assessed by using X-ray diffraction technology. it was observed that with increasing the number of laser impacts, the compressive residual stress near the surface increased. The depth of the compressive residual stress induced by LSP exceeded 0.8 mm from the surface. SCC test in 1 wt.% NaOH solution showed that LSP retarded the SCC initiation and growth in AZ31B Mg alloy. (C) 2010 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available