Overcoming strength-toughness trade-off in a eutectic high entropy alloy by optimizing chemical and microstructural heterogeneities
Abstract The well-known strength-toughness trade-off has long been an obstacle in the pursuit of advanced structural alloys. Here, we develop a eutectic high entropy alloy that effectively overcomes this limitation. Our alloy is composed of face-centered cubic and body-centered cubic crystalline pha...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2024-02-01
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| Series: | Communications Materials |
| Online Access: | https://doi.org/10.1038/s43246-024-00450-2 |
| _version_ | 1827326718944215040 |
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| author | Zhaoqi Chen Wenqing Zhu Hang Wang Quanfeng He Qihong Fang Xiaodi Liu Jia Li Yong Yang |
| author_facet | Zhaoqi Chen Wenqing Zhu Hang Wang Quanfeng He Qihong Fang Xiaodi Liu Jia Li Yong Yang |
| author_sort | Zhaoqi Chen |
| collection | DOAJ |
| description | Abstract The well-known strength-toughness trade-off has long been an obstacle in the pursuit of advanced structural alloys. Here, we develop a eutectic high entropy alloy that effectively overcomes this limitation. Our alloy is composed of face-centered cubic and body-centered cubic crystalline phases, and demonstrates attractive mechanical properties by harnessing microstructural hybridization and a strain-induced phase transition between phases. Unlike conventional eutectic alloys, the compositionally complexity of our alloy allows control of its microstructural and chemical heterogeneities across multiple length scales, ranging from atomic- and nano-scales to meso-scales. Optimizing these microstructural and chemical heterogeneities within our alloy enables high strength and ductility because of enhanced fracture resistance, outperforming alternative high and medium entropy alloys with similar compositions and microstructures. |
| first_indexed | 2024-03-07T14:49:33Z |
| format | Article |
| id | doaj.art-574e912474844286b7b356aa9e6428de |
| institution | Directory Open Access Journal |
| issn | 2662-4443 |
| language | English |
| last_indexed | 2024-03-07T14:49:33Z |
| publishDate | 2024-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Materials |
| spelling | doaj.art-574e912474844286b7b356aa9e6428de2024-03-05T19:46:27ZengNature PortfolioCommunications Materials2662-44432024-02-015111110.1038/s43246-024-00450-2Overcoming strength-toughness trade-off in a eutectic high entropy alloy by optimizing chemical and microstructural heterogeneitiesZhaoqi Chen0Wenqing Zhu1Hang Wang2Quanfeng He3Qihong Fang4Xiaodi Liu5Jia Li6Yong Yang7Department of Mechanical Engineering, City University of Hong Kong, Kowloon TongDepartment of Mechanical Engineering, City University of Hong Kong, Kowloon TongDepartment of Mechanical Engineering, City University of Hong Kong, Kowloon TongDepartment of Mechanical Engineering, City University of Hong Kong, Kowloon TongState Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, College of Mechanical and Vehicle Engineering, Hunan UniversityCollege of Mechatronics and Control Engineering, Shenzhen UniversityState Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, College of Mechanical and Vehicle Engineering, Hunan UniversityDepartment of Mechanical Engineering, City University of Hong Kong, Kowloon TongAbstract The well-known strength-toughness trade-off has long been an obstacle in the pursuit of advanced structural alloys. Here, we develop a eutectic high entropy alloy that effectively overcomes this limitation. Our alloy is composed of face-centered cubic and body-centered cubic crystalline phases, and demonstrates attractive mechanical properties by harnessing microstructural hybridization and a strain-induced phase transition between phases. Unlike conventional eutectic alloys, the compositionally complexity of our alloy allows control of its microstructural and chemical heterogeneities across multiple length scales, ranging from atomic- and nano-scales to meso-scales. Optimizing these microstructural and chemical heterogeneities within our alloy enables high strength and ductility because of enhanced fracture resistance, outperforming alternative high and medium entropy alloys with similar compositions and microstructures.https://doi.org/10.1038/s43246-024-00450-2 |
| spellingShingle | Zhaoqi Chen Wenqing Zhu Hang Wang Quanfeng He Qihong Fang Xiaodi Liu Jia Li Yong Yang Overcoming strength-toughness trade-off in a eutectic high entropy alloy by optimizing chemical and microstructural heterogeneities Communications Materials |
| title | Overcoming strength-toughness trade-off in a eutectic high entropy alloy by optimizing chemical and microstructural heterogeneities |
| title_full | Overcoming strength-toughness trade-off in a eutectic high entropy alloy by optimizing chemical and microstructural heterogeneities |
| title_fullStr | Overcoming strength-toughness trade-off in a eutectic high entropy alloy by optimizing chemical and microstructural heterogeneities |
| title_full_unstemmed | Overcoming strength-toughness trade-off in a eutectic high entropy alloy by optimizing chemical and microstructural heterogeneities |
| title_short | Overcoming strength-toughness trade-off in a eutectic high entropy alloy by optimizing chemical and microstructural heterogeneities |
| title_sort | overcoming strength toughness trade off in a eutectic high entropy alloy by optimizing chemical and microstructural heterogeneities |
| url | https://doi.org/10.1038/s43246-024-00450-2 |
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