Laser shock-processing for fatigue and fracture resistance

被引：13

作者：

Zhang, YK

Zhang, SY

Yu, CY

Tang, YX

Zhang, H

Wu, HX

Guo, DH

Wang, SB

Xia, XP

Chen, MS

Dai, YS

机构：

[1] NANJING UNIV,LAB MODERN ACOUST,NANJING 210093,PEOPLES R CHINA

[2] NANJING UNIV AERONAUT & ASTRONAUT,DEPT MECH ENGN,NANJING 210016,PEOPLES R CHINA

[3] UNIV SCI & TECHNOL CHINA,DEPT PHYS,HEFEI 230026,PEOPLES R CHINA

来源：

SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES | 1997年 / 40卷 / 02期

关键词：

laser shock-processing (LSP); fatigue life; aluminum alloy; stress wave; PVDF transducer;

D O I：

10.1007/BF02916949

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The generation mechanism of stress wave induced by laser-shocking is described and the stress wave is measured with a PVDF transducer. The visual inspections and control methods of the effectiveness of laser shock-processing (LSP) are built up. A small-sized, Q switched Nd: glass laser with high-power is used for LSP. The fatigue lives, of aluminum alloy are increased greatly after LSP. With 95% confidence, the mean fatigue life of 2024T62 aluminum alloy after the LSP is 4.5-9.8 times that of the un-shocked ones. The hardness, microstructure end fracture section of materials ate analysed before and after LSP. The anti-fatigue and anti-fracture mechanism is analysed and the prospect of wide applications of LSP technology are described.

引用

页码：170 / 177

页数：8

共 8 条

[1] DRY SLIDING WEAR BEHAVIOR OF A P/M FERROUS ALLOY SUPERFICIALLY DENSIFIED BY LASER SHOCK PROCESSING [J].