Study of mechanism of strengthening materials with laser shock processing

被引：0
|
作者：
Dahao Guo
Hongxing Wu
Shengbo Wang
Xin Hong
Jie Wang
Yusheng Dai
Xiaoping Xia
Yongkang Zhang
Hong Zhang
Yaxin Tang
Chengye Yu
机构：
[1] University of Science and Technology of China,Institute of High Power Lasers
[2] Nanjing University of Aeronautics and Astronautics,Department of Mechanical Engineering
来源：
Science in China Series E: Technological Sciences | 1999年 / 42卷
关键词：
laser-produced plasma; shock momentum; residual compressive stress; dislocation density; anti-fatigue life;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The material of surface layer absorbs the energy of laser and produces plasma, when the high power laser radiates the surface of material. The plasma blows up and produces an intense shock wave. When the surface of material is covered with a confining medium and an absorptive coating layer, the shock wave can be strengthened greatly. Therefore a huge momentum is exerted on the surface of material. There is a plastic deformation layer in the material when the shock stress exceeds the dynamic yield strength of material. Due to the residual compressive stress, the high density of dislocation in the plastic layer, the anti-fatigue life of material is prolonged.
引用
收藏
页码：288 / 293
页数：5
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