Study on crystal to amorphous transition of nickel-based alloy processed by ultra-short pulsed laser shock peening

J Li and WN Lu and L Liu and L Fu and AX Feng, MATERIALS LETTERS, 366, 136554 (2024).

DOI: 10.1016/j.matlet.2024.136554

The main purpose was to investigate the process of crystal to amorphous transition in nickel-based alloy subjected to ultra-short pulsed laser shock peening. A molecular dynamics model of laser shock peened nanopolycrystalline nickel-based alloy was established using LAMMPS. The influence of shock velocity on the amorphous transformation in nickel- based alloy was analyzed. The results indicated that ultra-short pulsed laser shock peening with ultra-high strain rate plastic deformation promoted the increase and accumulation of defect for nickel-based alloy, contributing to the formation of amorphous structures.

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