Achieving an ultrastrong yet ductile copper alloy via microstructural heterogeneity with dense ordered nanoprecipitates
Cast Al-containing cupronickel alloys are strong, corrosion resistant and anti-bio fouling, yet suffering from poor ductility due to intergranular brittle phase and inhomogeneous intragranular precipitation. Here, we employ industrial accessible powder hot extrusion to achieve an ultrafine hierarchi...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-08-01
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| Series: | Materials Research Letters |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/21663831.2025.2526101 |
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| author | Rui Zhong Weiwen Zhang Chao Zhao Zongqiang Luo Haokai Dong |
| author_facet | Rui Zhong Weiwen Zhang Chao Zhao Zongqiang Luo Haokai Dong |
| author_sort | Rui Zhong |
| collection | DOAJ |
| description | Cast Al-containing cupronickel alloys are strong, corrosion resistant and anti-bio fouling, yet suffering from poor ductility due to intergranular brittle phase and inhomogeneous intragranular precipitation. Here, we employ industrial accessible powder hot extrusion to achieve an ultrafine hierarchically microstructural tailoring of a Cu-17Ni-3Al based alloy, enabling an unprecedented strength-ductility combination (1.1 GPa ultimate strength with 21% elongation). The exceptional mechanical property is resulted from the homogeneous L12 nanoprecipitates and heterogeneous matrix created by the interactions between fragmented G phase and dynamic recrystallization. These findings highlight the potential of heterostructure engineering with ordered nanoprecipitates for optimizing mechanical performance of Cu alloys. |
| format | Article |
| id | doaj-art-dcfc9910cd974bb6a9348c9809470faf |
| institution | Kabale University |
| issn | 2166-3831 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj-art-dcfc9910cd974bb6a9348c9809470faf2025-08-20T03:41:04ZengTaylor & Francis GroupMaterials Research Letters2166-38312025-08-0113887588410.1080/21663831.2025.2526101Achieving an ultrastrong yet ductile copper alloy via microstructural heterogeneity with dense ordered nanoprecipitatesRui Zhong0Weiwen Zhang1Chao Zhao2Zongqiang Luo3Haokai Dong4State Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, People’s Republic of ChinaGuangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials, South China University of Technology, Guangzhou, People’s Republic of ChinaSchool of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, People’s Republic of ChinaGuangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials, South China University of Technology, Guangzhou, People’s Republic of ChinaState Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, People’s Republic of ChinaCast Al-containing cupronickel alloys are strong, corrosion resistant and anti-bio fouling, yet suffering from poor ductility due to intergranular brittle phase and inhomogeneous intragranular precipitation. Here, we employ industrial accessible powder hot extrusion to achieve an ultrafine hierarchically microstructural tailoring of a Cu-17Ni-3Al based alloy, enabling an unprecedented strength-ductility combination (1.1 GPa ultimate strength with 21% elongation). The exceptional mechanical property is resulted from the homogeneous L12 nanoprecipitates and heterogeneous matrix created by the interactions between fragmented G phase and dynamic recrystallization. These findings highlight the potential of heterostructure engineering with ordered nanoprecipitates for optimizing mechanical performance of Cu alloys.https://www.tandfonline.com/doi/10.1080/21663831.2025.2526101Cu–Ni–Al alloyheterogeneous microstructurepowder hot extrusionL12 nanoprecipitatesHDI hardening |
| spellingShingle | Rui Zhong Weiwen Zhang Chao Zhao Zongqiang Luo Haokai Dong Achieving an ultrastrong yet ductile copper alloy via microstructural heterogeneity with dense ordered nanoprecipitates Materials Research Letters Cu–Ni–Al alloy heterogeneous microstructure powder hot extrusion L12 nanoprecipitates HDI hardening |
| title | Achieving an ultrastrong yet ductile copper alloy via microstructural heterogeneity with dense ordered nanoprecipitates |
| title_full | Achieving an ultrastrong yet ductile copper alloy via microstructural heterogeneity with dense ordered nanoprecipitates |
| title_fullStr | Achieving an ultrastrong yet ductile copper alloy via microstructural heterogeneity with dense ordered nanoprecipitates |
| title_full_unstemmed | Achieving an ultrastrong yet ductile copper alloy via microstructural heterogeneity with dense ordered nanoprecipitates |
| title_short | Achieving an ultrastrong yet ductile copper alloy via microstructural heterogeneity with dense ordered nanoprecipitates |
| title_sort | achieving an ultrastrong yet ductile copper alloy via microstructural heterogeneity with dense ordered nanoprecipitates |
| topic | Cu–Ni–Al alloy heterogeneous microstructure powder hot extrusion L12 nanoprecipitates HDI hardening |
| url | https://www.tandfonline.com/doi/10.1080/21663831.2025.2526101 |
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