Laser shock peening induced surface nanocrystallization and martensite transformation in austenitic stainless steel
作者： Liucheng Zhou , Weifeng He , Sihai Luo , Changbai Long , Cheng Wang
DOI: 10.1016/J.JALLCOM.2015.06.268
关键词:
摘要: Abstract Surface nanocrystallization and deformation-induced martensite in AISI 304 stainless steel subjected to multiple laser shock peening (LSP) impacts were investigated by means of EBSD TEM observations. A layer isometric nanocrystalline with a size 50–300 nm has been formed on the surface after three LSP impacts. And grain refinement mechanism induced ultra-high strain rate plastic (>10 7 s −1 ) deformation during (AISI 304ss) is proposed based microstructural Both multidirectional mechanical twins martensites bands led subdivision at top
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