摘要
研究了高能量密度的激光形成的应力波对7475-T 761铝合金及30 CrMnSiNi 2 A高强度合金钢硬度及疲劳寿命的影响。证明30 CrMnSiNi 2 A及7475—T 761的疲劳寿命均有提高。表明LSP能增加金属表面的位错密度。
The effect of high intensity laser induced stress waves on the hardness and fatigueproperties of 7475 Aluminium, 30 CrMnSiNi 2 A steel were investigated. Laser shocking of thesealloys increases the hardness of 30 CrMnSon 2 A. The fatigue life were increased by laser shock-ing the region around the fastener hole before drilling. Also the transmission electron micrographsbefore and after laser shocking were shown. The microstructure with relatively high dislocationdensity after shocking was observed.
出处
《应用激光》
CSCD
北大核心
1992年第3期111-114,共4页
Applied Laser
关键词
激光器
激光冲击
金属
局部强化
laser shocking processing
LSP hardness
fatigue life
dislocation
