In:
Nanotechnology Reviews, Walter de Gruyter GmbH, Vol. 11, No. 1 ( 2022-03-09), p. 1158-1166
Abstract:
The micromechanical behavior of an Al/Al 2 Cu/Cu multilayer with characteristic crystal orientation during uniaxial tensile deformation was investigated by molecular dynamics. The simulation results showed that under tensile loading, the dislocation nucleates at the Cu/Al 2 Cu heterogeneous interface and moves toward the Cu layer along the {111} crystal plane. The deformation mechanism is intralayer confinement slip. As the dislocations proliferated, interactions between them occurred; resulting in the formation of insertion stacking faults and deformation twins in the Cu and Al layers. However, no dislocation lines were generated in the Al 2 Cu layer during tensile deformation. As the load increased, the stress concentration at the Al 2 Cu/Al interface led to the fracture of the complex. In addition, the microplastic deformation mechanism and mechanical properties of Al/Al 2 Cu/Cu composites at different temperatures and strain rates were significantly different. These results revealed the microdeformation mechanism of laminated composites containing brittle phases.
Type of Medium:
Online Resource
ISSN:
2191-9097
DOI:
10.1515/ntrev-2022-0072
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
2022
detail.hit.zdb_id:
2646548-6
