Spall in Aluminium with Helium Bubbles under Laser Shock Loading  

作　　者：肖大武 何立峰 周萍 邹东利 舒桦 

机构地区：[1]Institute of Materials, China Academy of Engineering Physics, Mianyang 621700 [2]Institute of Laser, China Academy of Engineering Physics, Mianyang 621700

出　　处：《Chinese Physics Letters》2017年第5期88-91,共4页中国物理快报（英文版）

基　　金：Supported by the Science Foundation of China Academy of Engineering Physics under Grant No 9090702

摘　　要：The spallation behaviors of Al＋0.2wt% ^10B targets and neutron irradiated Al＋0.2wt% ^10B targets with 5nm radius helium bubble subjected to direct laser ablation are presented. It is found that the spall strength increases significantly with the tensile strain rate, and the helium bubble or boron inclusions in aluminum reduces the spall strength of materials by 34%. However, slight difference is observed in the spall strength of unirradiated samples compared with the irradiated sample with helium bubbles.The spallation behaviors of Al＋0.2wt% ^10B targets and neutron irradiated Al＋0.2wt% ^10B targets with 5nm radius helium bubble subjected to direct laser ablation are presented. It is found that the spall strength increases significantly with the tensile strain rate, and the helium bubble or boron inclusions in aluminum reduces the spall strength of materials by 34%. However, slight difference is observed in the spall strength of unirradiated samples compared with the irradiated sample with helium bubbles.

关 键 词：Spall in Aluminium with Helium Bubbles under Laser Shock Loading 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TN249[金属学及工艺—金属材料]