Heterostructure-enabled creep resistance and deformation mechanisms in a new Ni-Co-based high-entropy alloy
A novel Ni-Co-based high-entropy alloy (HEA) featuring a stable FCC + L12 dual-phase structure was developed to address creep embrittlement at intermediate temperature. By creating heterostructures in the present HEA, the yield strength of Ni-Co-based HEA was significantly improved from 1100 MPa to...
| Published in: | Materials Research Letters |
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| Main Authors: | , , , , , , , , |
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2025-10-01
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| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/21663831.2025.2576487 |
| _version_ | 1848667369759571968 |
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| author | Jinxiong Hou Lijun Jing Boxuan Cao Yilu Zhao Zhongkai Ren Tao Wang Zhihua Wang Hyoung Seop Kim Tao Yang |
| author_facet | Jinxiong Hou Lijun Jing Boxuan Cao Yilu Zhao Zhongkai Ren Tao Wang Zhihua Wang Hyoung Seop Kim Tao Yang |
| author_sort | Jinxiong Hou |
| collection | DOAJ |
| container_title | Materials Research Letters |
| description | A novel Ni-Co-based high-entropy alloy (HEA) featuring a stable FCC + L12 dual-phase structure was developed to address creep embrittlement at intermediate temperature. By creating heterostructures in the present HEA, the yield strength of Ni-Co-based HEA was significantly improved from 1100 MPa to 1500 MPa with an acceptable tensile elongation of 10%. Simultaneously, the creep embrittlement can be defeated in their heterogeneous counterparts with a superior low steady creep rate of 0.00044%/h at 725 °C and 630 MPa. Transmission electron microscopy evidence suggests that the anti-phase boundaries (APBs) and superlattice intrinsic stacking faults (SISFs) shear the precipitates during the deformation. |
| format | Article |
| id | doaj-art-b3f7cd1b400a4fec94aa45f92d0bd1ab |
| institution | Directory of Open Access Journals |
| issn | 2166-3831 |
| language | English |
| publishDate | 2025-10-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| spelling | doaj-art-b3f7cd1b400a4fec94aa45f92d0bd1ab2025-10-28T17:02:59ZengTaylor & Francis GroupMaterials Research Letters2166-38312025-10-0111010.1080/21663831.2025.2576487Heterostructure-enabled creep resistance and deformation mechanisms in a new Ni-Co-based high-entropy alloyJinxiong Hou0Lijun Jing1Boxuan Cao2Yilu Zhao3Zhongkai Ren4Tao Wang5Zhihua Wang6Hyoung Seop Kim7Tao Yang8College of Mechanical Engineering, Taiyuan University of Technology, Taiyuan, People’s Republic of ChinaDepartment of Materials Science and Engineering, City University of Hong Kong, Kowloon, People’s Republic of ChinaSchool of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, People’s Republic of ChinaSchool of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, People’s Republic of ChinaCollege of Mechanical Engineering, Taiyuan University of Technology, Taiyuan, People’s Republic of ChinaCollege of Mechanical Engineering, Taiyuan University of Technology, Taiyuan, People’s Republic of ChinaCollege of Mechanical Engineering, Taiyuan University of Technology, Taiyuan, People’s Republic of ChinaGraduate Institute of Ferrous & Energy Materials Technology, Pohang University of Science and Technology (POSTECH), Pohang, South KoreaDepartment of Materials Science and Engineering, City University of Hong Kong, Kowloon, People’s Republic of ChinaA novel Ni-Co-based high-entropy alloy (HEA) featuring a stable FCC + L12 dual-phase structure was developed to address creep embrittlement at intermediate temperature. By creating heterostructures in the present HEA, the yield strength of Ni-Co-based HEA was significantly improved from 1100 MPa to 1500 MPa with an acceptable tensile elongation of 10%. Simultaneously, the creep embrittlement can be defeated in their heterogeneous counterparts with a superior low steady creep rate of 0.00044%/h at 725 °C and 630 MPa. Transmission electron microscopy evidence suggests that the anti-phase boundaries (APBs) and superlattice intrinsic stacking faults (SISFs) shear the precipitates during the deformation.https://www.tandfonline.com/doi/10.1080/21663831.2025.2576487High-entropy alloyPrecipitation strengtheningHeterostructureCreep |
| spellingShingle | Jinxiong Hou Lijun Jing Boxuan Cao Yilu Zhao Zhongkai Ren Tao Wang Zhihua Wang Hyoung Seop Kim Tao Yang Heterostructure-enabled creep resistance and deformation mechanisms in a new Ni-Co-based high-entropy alloy High-entropy alloy Precipitation strengthening Heterostructure Creep |
| title | Heterostructure-enabled creep resistance and deformation mechanisms in a new Ni-Co-based high-entropy alloy |
| title_full | Heterostructure-enabled creep resistance and deformation mechanisms in a new Ni-Co-based high-entropy alloy |
| title_fullStr | Heterostructure-enabled creep resistance and deformation mechanisms in a new Ni-Co-based high-entropy alloy |
| title_full_unstemmed | Heterostructure-enabled creep resistance and deformation mechanisms in a new Ni-Co-based high-entropy alloy |
| title_short | Heterostructure-enabled creep resistance and deformation mechanisms in a new Ni-Co-based high-entropy alloy |
| title_sort | heterostructure enabled creep resistance and deformation mechanisms in a new ni co based high entropy alloy |
| topic | High-entropy alloy Precipitation strengthening Heterostructure Creep |
| url | https://www.tandfonline.com/doi/10.1080/21663831.2025.2576487 |
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