Atomic simulation study on the effect of Y atom and grain boundary on tensile deformation in polycrystalline magnesium alloy
The deformation of polycrystalline magnesium alloy was studied by molecular dynamics simulation. The influencing factors of tensile properties and its deformation mechanism were discussed. It was found that Y atom could inhibit the activation of basal <a> slip and promote the activation of pyr...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-03-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423000595 |
| _version_ | 1797858841837174784 |
|---|---|
| author | Wanwan Mei Quanan Li Xiaoya Chen |
| author_facet | Wanwan Mei Quanan Li Xiaoya Chen |
| author_sort | Wanwan Mei |
| collection | DOAJ |
| description | The deformation of polycrystalline magnesium alloy was studied by molecular dynamics simulation. The influencing factors of tensile properties and its deformation mechanism were discussed. It was found that Y atom could inhibit the activation of basal <a> slip and promote the activation of pyramidal <c+a> slip. The crack was formed at the grain boundary with large orientation differences and propagated along the grain boundary. The stress concentration mainly occurred at grain boundaries, and its concentration decreases with the grain size decreasing. The formation of deformation twin was inhibited by small grains. The twin tended to nucleate at grain boundary and grew by absorbing dislocations. It was also found that new twin was preferentially formed near the old twin. |
| first_indexed | 2024-04-09T21:19:53Z |
| format | Article |
| id | doaj.art-cec5eedb00e744afa19b3bfe1fadfeec |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-09T21:19:53Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-cec5eedb00e744afa19b3bfe1fadfeec2023-03-28T06:45:58ZengElsevierJournal of Materials Research and Technology2238-78542023-03-0123931942Atomic simulation study on the effect of Y atom and grain boundary on tensile deformation in polycrystalline magnesium alloyWanwan Mei0Quanan Li1Xiaoya Chen2School 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, China; Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology, Luoyang, 471023, China; Longmen Laboratory, Luoyang, 471000, China; Corresponding author.School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China; Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology, Luoyang, 471023, China; Corresponding author.The deformation of polycrystalline magnesium alloy was studied by molecular dynamics simulation. The influencing factors of tensile properties and its deformation mechanism were discussed. It was found that Y atom could inhibit the activation of basal <a> slip and promote the activation of pyramidal <c+a> slip. The crack was formed at the grain boundary with large orientation differences and propagated along the grain boundary. The stress concentration mainly occurred at grain boundaries, and its concentration decreases with the grain size decreasing. The formation of deformation twin was inhibited by small grains. The twin tended to nucleate at grain boundary and grew by absorbing dislocations. It was also found that new twin was preferentially formed near the old twin.http://www.sciencedirect.com/science/article/pii/S2238785423000595Polycrystalline magnesium alloyMg–YGrain boundaryCrack formTwin nucleate |
| spellingShingle | Wanwan Mei Quanan Li Xiaoya Chen Atomic simulation study on the effect of Y atom and grain boundary on tensile deformation in polycrystalline magnesium alloy Journal of Materials Research and Technology Polycrystalline magnesium alloy Mg–Y Grain boundary Crack form Twin nucleate |
| title | Atomic simulation study on the effect of Y atom and grain boundary on tensile deformation in polycrystalline magnesium alloy |
| title_full | Atomic simulation study on the effect of Y atom and grain boundary on tensile deformation in polycrystalline magnesium alloy |
| title_fullStr | Atomic simulation study on the effect of Y atom and grain boundary on tensile deformation in polycrystalline magnesium alloy |
| title_full_unstemmed | Atomic simulation study on the effect of Y atom and grain boundary on tensile deformation in polycrystalline magnesium alloy |
| title_short | Atomic simulation study on the effect of Y atom and grain boundary on tensile deformation in polycrystalline magnesium alloy |
| title_sort | atomic simulation study on the effect of y atom and grain boundary on tensile deformation in polycrystalline magnesium alloy |
| topic | Polycrystalline magnesium alloy Mg–Y Grain boundary Crack form Twin nucleate |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423000595 |
| work_keys_str_mv | AT wanwanmei atomicsimulationstudyontheeffectofyatomandgrainboundaryontensiledeformationinpolycrystallinemagnesiumalloy AT quananli atomicsimulationstudyontheeffectofyatomandgrainboundaryontensiledeformationinpolycrystallinemagnesiumalloy AT xiaoyachen atomicsimulationstudyontheeffectofyatomandgrainboundaryontensiledeformationinpolycrystallinemagnesiumalloy |