Nano‐indentation investigation on nano‐twinned Cu–Ag alloys with GBAZ segregation
Abstract For the sake of comprehending the mechanical mechanisms of nano‐twinned (NT) Cu–Ag alloys with grain boundary affect zone (GBAZ) segregation, molecular dynamics (MD) simulations were used to observe its behaviours during the nano‐indentation progress. The effect of grain size, alloying atom...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-09-01
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| Series: | Micro & Nano Letters |
| Online Access: | https://doi.org/10.1049/mna2.12128 |
| _version_ | 1811315012037246976 |
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| author | Dasheng Zhu Wenli Ye Feng Zhang Jianqiu Zhou Guo Li Shuang Ni |
| author_facet | Dasheng Zhu Wenli Ye Feng Zhang Jianqiu Zhou Guo Li Shuang Ni |
| author_sort | Dasheng Zhu |
| collection | DOAJ |
| description | Abstract For the sake of comprehending the mechanical mechanisms of nano‐twinned (NT) Cu–Ag alloys with grain boundary affect zone (GBAZ) segregation, molecular dynamics (MD) simulations were used to observe its behaviours during the nano‐indentation progress. The effect of grain size, alloying atoms (Ag) content as well as twin boundary spacing (TBS) on the deformation behaviours are considered in this investigation. The open visualization tool OVITO is used to directly observe the deformation progress of nanocrystals during nano‐indentation. The reaction between lattice dislocations and twin boundaries is recorded and analyzed in detail as the indentation deepens. The simulation results demonstrate a positive correlation between the twin boundary spacing and the occurrence of dislocations. The dislocation rings will appear more effortlessly as the TBSs increase. Meanwhile, it is frequently observed that the face centre cubic (FCC) atoms are transformed into body centre cubic (BCC) atoms. This work will help to seek for novel metal materials with high strength, high ductility and great electrical conductivity. |
| first_indexed | 2024-04-13T11:21:30Z |
| format | Article |
| id | doaj.art-e34103a6db8940e5ba8aa2acf8856a05 |
| institution | Directory Open Access Journal |
| issn | 1750-0443 |
| language | English |
| last_indexed | 2024-04-13T11:21:30Z |
| publishDate | 2022-09-01 |
| publisher | Wiley |
| record_format | Article |
| series | Micro & Nano Letters |
| spelling | doaj.art-e34103a6db8940e5ba8aa2acf8856a052022-12-22T02:48:48ZengWileyMicro & Nano Letters1750-04432022-09-01171023324110.1049/mna2.12128Nano‐indentation investigation on nano‐twinned Cu–Ag alloys with GBAZ segregationDasheng Zhu0Wenli Ye1Feng Zhang2Jianqiu Zhou3Guo Li4Shuang Ni5School of Mechanical Engineering Nanjing Institute of Technology Nanjing Jiangsu ChinaSchool of Mechanical Engineering Nanjing Institute of Technology Nanjing Jiangsu ChinaSchool of Mechanical Engineering Nanjing Institute of Technology Nanjing Jiangsu ChinaDepartment of Mechanical Engineering Nanjing Tech University Nanjing Jiangsu ChinaSchool of Mechanical Engineering Nanjing Institute of Technology Nanjing Jiangsu ChinaSchool of Mechanical Engineering Nanjing Institute of Technology Nanjing Jiangsu ChinaAbstract For the sake of comprehending the mechanical mechanisms of nano‐twinned (NT) Cu–Ag alloys with grain boundary affect zone (GBAZ) segregation, molecular dynamics (MD) simulations were used to observe its behaviours during the nano‐indentation progress. The effect of grain size, alloying atoms (Ag) content as well as twin boundary spacing (TBS) on the deformation behaviours are considered in this investigation. The open visualization tool OVITO is used to directly observe the deformation progress of nanocrystals during nano‐indentation. The reaction between lattice dislocations and twin boundaries is recorded and analyzed in detail as the indentation deepens. The simulation results demonstrate a positive correlation between the twin boundary spacing and the occurrence of dislocations. The dislocation rings will appear more effortlessly as the TBSs increase. Meanwhile, it is frequently observed that the face centre cubic (FCC) atoms are transformed into body centre cubic (BCC) atoms. This work will help to seek for novel metal materials with high strength, high ductility and great electrical conductivity.https://doi.org/10.1049/mna2.12128 |
| spellingShingle | Dasheng Zhu Wenli Ye Feng Zhang Jianqiu Zhou Guo Li Shuang Ni Nano‐indentation investigation on nano‐twinned Cu–Ag alloys with GBAZ segregation Micro & Nano Letters |
| title | Nano‐indentation investigation on nano‐twinned Cu–Ag alloys with GBAZ segregation |
| title_full | Nano‐indentation investigation on nano‐twinned Cu–Ag alloys with GBAZ segregation |
| title_fullStr | Nano‐indentation investigation on nano‐twinned Cu–Ag alloys with GBAZ segregation |
| title_full_unstemmed | Nano‐indentation investigation on nano‐twinned Cu–Ag alloys with GBAZ segregation |
| title_short | Nano‐indentation investigation on nano‐twinned Cu–Ag alloys with GBAZ segregation |
| title_sort | nano indentation investigation on nano twinned cu ag alloys with gbaz segregation |
| url | https://doi.org/10.1049/mna2.12128 |
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