Molecular dynamics study of deformation mechanism of interfacial microzone of Cu/Al2Cu/Al composites under tension
The micromechanical behavior of an Al/Al2Cu/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/Al2Cu heterogeneous interface an...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2022-03-01
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| Series: | Nanotechnology Reviews |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/ntrev-2022-0072 |
| _version_ | 1811235747442720768 |
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| author | Chen Yao Wang Aiqin Guo Zishuo Xie Jingpei |
| author_facet | Chen Yao Wang Aiqin Guo Zishuo Xie Jingpei |
| author_sort | Chen Yao |
| collection | DOAJ |
| description | The micromechanical behavior of an Al/Al2Cu/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/Al2Cu 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 Al2Cu layer during tensile deformation. As the load increased, the stress concentration at the Al2Cu/Al interface led to the fracture of the complex. In addition, the microplastic deformation mechanism and mechanical properties of Al/Al2Cu/Cu composites at different temperatures and strain rates were significantly different. These results revealed the microdeformation mechanism of laminated composites containing brittle phases. |
| first_indexed | 2024-04-12T11:57:06Z |
| format | Article |
| id | doaj.art-9e85d8b8d7cd473bbeda879a491448fc |
| institution | Directory Open Access Journal |
| issn | 2191-9097 |
| language | English |
| last_indexed | 2024-04-12T11:57:06Z |
| publishDate | 2022-03-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanotechnology Reviews |
| spelling | doaj.art-9e85d8b8d7cd473bbeda879a491448fc2022-12-22T03:33:58ZengDe GruyterNanotechnology Reviews2191-90972022-03-011111158116610.1515/ntrev-2022-0072Molecular dynamics study of deformation mechanism of interfacial microzone of Cu/Al2Cu/Al composites under tensionChen Yao0Wang Aiqin1Guo Zishuo2Xie Jingpei3School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaThe micromechanical behavior of an Al/Al2Cu/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/Al2Cu 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 Al2Cu layer during tensile deformation. As the load increased, the stress concentration at the Al2Cu/Al interface led to the fracture of the complex. In addition, the microplastic deformation mechanism and mechanical properties of Al/Al2Cu/Cu composites at different temperatures and strain rates were significantly different. These results revealed the microdeformation mechanism of laminated composites containing brittle phases.https://doi.org/10.1515/ntrev-2022-0072molecular dynamics simulationtensile loadingplastic deformation mechanism |
| spellingShingle | Chen Yao Wang Aiqin Guo Zishuo Xie Jingpei Molecular dynamics study of deformation mechanism of interfacial microzone of Cu/Al2Cu/Al composites under tension Nanotechnology Reviews molecular dynamics simulation tensile loading plastic deformation mechanism |
| title | Molecular dynamics study of deformation mechanism of interfacial microzone of Cu/Al2Cu/Al composites under tension |
| title_full | Molecular dynamics study of deformation mechanism of interfacial microzone of Cu/Al2Cu/Al composites under tension |
| title_fullStr | Molecular dynamics study of deformation mechanism of interfacial microzone of Cu/Al2Cu/Al composites under tension |
| title_full_unstemmed | Molecular dynamics study of deformation mechanism of interfacial microzone of Cu/Al2Cu/Al composites under tension |
| title_short | Molecular dynamics study of deformation mechanism of interfacial microzone of Cu/Al2Cu/Al composites under tension |
| title_sort | molecular dynamics study of deformation mechanism of interfacial microzone of cu al2cu al composites under tension |
| topic | molecular dynamics simulation tensile loading plastic deformation mechanism |
| url | https://doi.org/10.1515/ntrev-2022-0072 |
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