Xu Dong Ren

TL;DR: In this article, the micro-structural evolution and grain refinement in ANSI 304 stainless steel subjected to multiple laser shock processing (LSP) impacts were investigated by means of cross-sectional optical microscopy and transmission electron microscopy observations.

TL;DR: In this paper, the effects of laser shock processing (LSP) on the residual stresses and micro-hardness of the turbojet engine blades manufactured by LY2 aluminum alloy, and fatigue performance of the notched specimens cut from LY 2 blade plate were investigated.

TL;DR: In this paper, the effects of these two LSP methods on topography, micro-hardness and residual stress distribution were studied, and the friction and wear performance under dry friction and oil lubrication were also studied.

TL;DR: In this paper, the weld appearance, microstructure, composition distribution and microhardness of welded joint were investigated with a YLR-6000 fiber laser under Ar protective gas, and the results showed that the narrow and fully penetrated welded joints without marco-defects can be obtained with tightly focused 2kW fiber laser power and 20mm/s welding speed.

TL;DR: In this article, the microstructure, micro-hardness and residual stress of TC11 alloy treated by laser shock peening (LSP) are investigated and the sliding wear experiments are performed to study the influence of various temperature and applied load on the wear behaviors of TC 11 alloy with and without LSP.