A computational study on the microstructural evolution in near-surface copper grain boundary structures due to femtosecond laser processing

MR Karim and M Kattoura and SR Mannava and VK Vasudevan and AS Malik and D Qian, COMPUTATIONAL MECHANICS, 61, 105-117 (2018).

DOI: 10.1007/s00466-017-1449-5

A multiscale simulation method is established to study the microstructural responses of near-surface grain boundary structures of copper subjected to ultrashort femtosecond laser pulse. By integrating a two-temperature model with molecular dynamics, the presented approach allows for incorporation of both laser processing parameters and microstructures, enabling systematic simulation studies on the process- properties link. Following a brief introduction of the simulation methodology, a detailed modeling study on the ultrashort laser-material interaction is presented. In particular, we highlight the effects of laser process parameters on the near-surface response and corresponding phase change, formation of voids and their growth, and mechanism of dislocation nucleating and propagating from grain boundary.

Return to Publications page