Molecular dynamics study on the deformation mechanism of Cu–Zr/Al laminated composites
Year: 2024
Type: article
Abstract: In this paper, molecular dynamics simulation was used to investigate the micromechanical behavior of the Cu-Zr/Al composite interface after rapid solidification. The effects of different Zr contents and different tensile rates on the tensile strength of the Cu-Zr/Al composite interface were investigated. The results show that the tensile strength of the composite plate increased and then decreased with the increase in Zr content, and the tensile strength is the best when the Zr content is 0.33 wt%. It was found that different tensile rates have a similar plastic deformation process of the composite model, which is divided into three stages: the expansion of stacking faults in the Cu-Zr/Al solid solution, the expansion of stacking faults successively in the Al and Cu-Zr alloy layers, and the spreading of cross - stacking faults. But the greater the strain rate, the slower the stacking faults fracture. So different tensile rates had different fracture modes during the tensile fracture process. when the strain rate is 0.01 ps-1 and 0.001 ps-1, it is a ductile fracture, and when the strain rate is 0.0001 ps-1, it is a brittle fracture.
Authors: Mengdan Wang, Jinping Zhang, Aiqin Wang, Tingting Liang, Jingpei Xie
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,430
OpenAlex ID: W4403285241