Enhanced strength-ductility synergy in an ultra-strong copper alloy via coherent nanoprecipitates and stress-induced twinning
Deformation twins (DTs) and stacking faults (SFs) are rarely found in Cu-20Ni-20Mn alloy, which limits further strengthening of alloy. Here, we report ultra-strong Cu-20Ni-20Mn alloy prepared by introducing a high density of coherent nanoprecipitates. The ultimate tensile strength (UTS) of alloy can...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2024-04-01
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| Series: | Materials Research Letters |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/21663831.2024.2319927 |
| _version_ | 1827320856721752064 |
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| author | Kui Jin Jiangnan Li Caiju Li Qiong Lu Zunyan Xu Yuanqi You Peng Gao Liang Liu Jianhong Yi Jurgen Eckert |
| author_facet | Kui Jin Jiangnan Li Caiju Li Qiong Lu Zunyan Xu Yuanqi You Peng Gao Liang Liu Jianhong Yi Jurgen Eckert |
| author_sort | Kui Jin |
| collection | DOAJ |
| description | Deformation twins (DTs) and stacking faults (SFs) are rarely found in Cu-20Ni-20Mn alloy, which limits further strengthening of alloy. Here, we report ultra-strong Cu-20Ni-20Mn alloy prepared by introducing a high density of coherent nanoprecipitates. The ultimate tensile strength (UTS) of alloy can be largely enhanced to 1624.7 ± 14.7 MPa, while maintaining an acceptable elongation of 7.3 ± 0.5%. We find that the coherent nanoprecipitates contribute to an ultra-high true stress up to about 1740 MPa, which facilitate the formation of DTs. The strength and ductility improvement stems from the synergistic effect of dislocations, nanoprecipitates and DTs. |
| first_indexed | 2024-03-07T23:08:35Z |
| format | Article |
| id | doaj.art-e1383eb7d4e244cfbcf0fd226947e371 |
| institution | Directory Open Access Journal |
| issn | 2166-3831 |
| language | English |
| last_indexed | 2024-04-25T00:53:18Z |
| publishDate | 2024-04-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj.art-e1383eb7d4e244cfbcf0fd226947e3712024-03-11T14:46:35ZengTaylor & Francis GroupMaterials Research Letters2166-38312024-04-0112428128910.1080/21663831.2024.2319927Enhanced strength-ductility synergy in an ultra-strong copper alloy via coherent nanoprecipitates and stress-induced twinningKui Jin0Jiangnan Li1Caiju Li2Qiong Lu3Zunyan Xu4Yuanqi You5Peng Gao6Liang Liu7Jianhong Yi8Jurgen Eckert9Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, People’s Republic of ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, People’s Republic of ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, People’s Republic of ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, People’s Republic of ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, People’s Republic of ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, People’s Republic of ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, People’s Republic of ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, People’s Republic of ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, People’s Republic of ChinaErich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben, AustriaDeformation twins (DTs) and stacking faults (SFs) are rarely found in Cu-20Ni-20Mn alloy, which limits further strengthening of alloy. Here, we report ultra-strong Cu-20Ni-20Mn alloy prepared by introducing a high density of coherent nanoprecipitates. The ultimate tensile strength (UTS) of alloy can be largely enhanced to 1624.7 ± 14.7 MPa, while maintaining an acceptable elongation of 7.3 ± 0.5%. We find that the coherent nanoprecipitates contribute to an ultra-high true stress up to about 1740 MPa, which facilitate the formation of DTs. The strength and ductility improvement stems from the synergistic effect of dislocations, nanoprecipitates and DTs.https://www.tandfonline.com/doi/10.1080/21663831.2024.2319927Deformation twinsstress-induced twinningcoherent nanoprecipitatesstacking faultscopper alloy |
| spellingShingle | Kui Jin Jiangnan Li Caiju Li Qiong Lu Zunyan Xu Yuanqi You Peng Gao Liang Liu Jianhong Yi Jurgen Eckert Enhanced strength-ductility synergy in an ultra-strong copper alloy via coherent nanoprecipitates and stress-induced twinning Materials Research Letters Deformation twins stress-induced twinning coherent nanoprecipitates stacking faults copper alloy |
| title | Enhanced strength-ductility synergy in an ultra-strong copper alloy via coherent nanoprecipitates and stress-induced twinning |
| title_full | Enhanced strength-ductility synergy in an ultra-strong copper alloy via coherent nanoprecipitates and stress-induced twinning |
| title_fullStr | Enhanced strength-ductility synergy in an ultra-strong copper alloy via coherent nanoprecipitates and stress-induced twinning |
| title_full_unstemmed | Enhanced strength-ductility synergy in an ultra-strong copper alloy via coherent nanoprecipitates and stress-induced twinning |
| title_short | Enhanced strength-ductility synergy in an ultra-strong copper alloy via coherent nanoprecipitates and stress-induced twinning |
| title_sort | enhanced strength ductility synergy in an ultra strong copper alloy via coherent nanoprecipitates and stress induced twinning |
| topic | Deformation twins stress-induced twinning coherent nanoprecipitates stacking faults copper alloy |
| url | https://www.tandfonline.com/doi/10.1080/21663831.2024.2319927 |
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