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Article
Deformation Induced Martensite in NiTi and its Shape Memory Effects Generated by Low Temperature Laser Shock Peening
Journal of Applied Physics
  • Yiliang Liao
  • Chang Ye, University of Akron, Main campus
  • Dong Lin
  • Sergey Suslov
  • Gary J. Cheng
Document Type
Article
Publication Date
1-1-2012
Abstract
In this study, laser shock peening (LSP) was utilized to generate localized deformation induced martensite (DIM) in NiTi shape memory alloy. The DIM was investigated by x-ray diffraction and transmission electron microscopy. The effects of temperature and laser intensity on DIM transformation were investigated. It has been found that higher laser intensity and lower processing temperature leads to higher volume fraction of DIM. This is attributed to the increase of the chemical driving force and the increase in the density of potential martensite variant for martensite nucleation at low temperatures. The localized shape memory effect in micrometer scale after low temperature LSP has been evaluated.
Citation Information
Yiliang Liao, Chang Ye, Dong Lin, Sergey Suslov, et al.. "Deformation Induced Martensite in NiTi and its Shape Memory Effects Generated by Low Temperature Laser Shock Peening" Journal of Applied Physics Vol. 112 (2012) p. 33515
Available at: http://works.bepress.com/chang_ye/48/