期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 24, 期 10, 页码 1021-1036出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0142-1123(02)00022-1
关键词
laser shock processing; laser peening; residual stress; fatigue; microstructure; morphology
The current status of research and development on laser shock processing of metals, also known as laser peening, using Q-switched high power lasers is reviewed. The influence of processing parameters on the laser-induced shock waves in metal components are discussed and analyzed. Special attention is paid to the residual stresses and improved fatigue performance from laser peening, which are compared with conventional shot peening results. Modification of microstructure, surface morphology, hardness, and strength by laser peening is also discussed. Finally, applications of laser peening are addressed. Results to date indicate that laser peening has great potential as a means of improving the mechanical performance of components. (C) 2002 Elsevier Science Ltd. All rights reserved.
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