Laser shock processing by Q-switched Nd : YAG effects on mechanical properties of C86400 Cu-Zn alloy

Abstract EN

X-ray florescence technique was used to analyze the chemical composition of this alloy.

LSP treatment was performed with a Q-switched Nd: YAG laser with a wavelength of 1064 nm.

The results show that laser shock processing can significantly increase the micro-hardness and surface roughness of the LSP-treated sample.

Vickers diamond indenter was used to measure the micro-hardness of all samples with different laser pulse energy and different number of the laser pulses.

It is found that the metal hardness can be significantly increased to more than 80 % by increasing the laser energy and the number of laser pulse irradiated per unit area.