Molecular dynamics simulations of void growth in γ-TiAl single crystal

Molecular dynamics simulations of void shrinkage in γ-TiAl single crystal

“…This indicates that the larger the void is, the smaller the strength of the material is. Similar results have been reported in the literatures [8,38,39].…”

“…In previous investigation on void growth [8] and here on the void shrinkage in c-TiAl, the molecular dynamics LAMMPS (Large-scale Atomic/Molecular Massively Parallel Simulator) simulation package [29] was used. The embedded atom method (EAM)…”

“…Some of them also investigated the voids under compression or shock loading to study the compression process and deformation mechanism of voids [6,7]. We have simulated the growth and fracture of the spherical void in c-TiAl single crystal as well as the dislocation propagation mechanism during the void growth [8].…”

“…In the actual work environment, equipments or components under pressure is not uncommon, and these objects always contain this or that type of micro-defects, which often affect the life of the materials. Based on our previous research for the void growth in c-TiAl [8], we still carried out MD simulation to analyze the micro-mechanisms of void shrinkage and the mechanical behavior of compressed c-TiAl single crystal. The effects of the specimen size, strain rate, and initial void volume fraction were investigated.…”

Molecular dynamics simulation of the influence of elliptical void interaction on the tensile behavior of aluminum

“…Some dislocation mechanisms like the prismatic loop emission induced by inclusions are more physically suitable for 3D simulations. For a spherical void in a cubic MD geometry, many authors [19,24,25,[36][37][38][39][40] have contributed to uncovering the void-related material behavior over the years.…”