Achieving high strength-ductility synergy in a Mg97Y1Zn1Ho1 alloy via a nano-spaced long-period stacking-ordered phase
Achieving high strength in Mg alloys is usually accompanied by ductility loss. Here, a novel Mg97Y1Zn1Ho1 at.% alloy with a yield strength of 403 MPa and an elongation of 10% is developed. The strength-ductility synergy is obtained by a comprehensive strategy, including a lamella bimodal microstruct...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-04-01
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| Series: | Journal of Magnesium and Alloys |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956722000317 |
| _version_ | 1827266638664171520 |
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| author | Mingyu Fan Ye Cui Yang Zhang Xinghao Wei Xue Cao Peter K. Liaw Yuansheng Yang Zhongwu Zhang |
| author_facet | Mingyu Fan Ye Cui Yang Zhang Xinghao Wei Xue Cao Peter K. Liaw Yuansheng Yang Zhongwu Zhang |
| author_sort | Mingyu Fan |
| collection | DOAJ |
| description | Achieving high strength in Mg alloys is usually accompanied by ductility loss. Here, a novel Mg97Y1Zn1Ho1 at.% alloy with a yield strength of 403 MPa and an elongation of 10% is developed. The strength-ductility synergy is obtained by a comprehensive strategy, including a lamella bimodal microstructure design and the introduction of nano-spaced solute-segregated 14H long-period stacking-ordered phase (14H LPSO phase) through rare-earth Ho alloying. The lamella bimodal microstructure consists of elongated un-recrystallized (un-DRXed) coarse grains and fine dynamically-recrystallized grains (DRXed regions). The nano-spaced solute-segregated 14H LPSO phase is distributed in DRXed regions. The outstanding yield strength is mainly contributed by grain-boundary strengthening, 18R LPSO strengthening, and fiber-like reinforcement strengthening from the nano-spaced 14H LPSO phase. The high elongation is due primarily to the combined effects of the bimodal and lamellar microstructures through enhancing the work-hardening capability. |
| first_indexed | 2024-03-13T07:43:01Z |
| format | Article |
| id | doaj.art-a2602025161247ee8ecb88dbcedc2f14 |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2025-03-22T04:21:02Z |
| publishDate | 2023-04-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-a2602025161247ee8ecb88dbcedc2f142024-04-28T07:54:45ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672023-04-0111413211331Achieving high strength-ductility synergy in a Mg97Y1Zn1Ho1 alloy via a nano-spaced long-period stacking-ordered phaseMingyu Fan0Ye Cui1Yang Zhang2Xinghao Wei3Xue Cao4Peter K. Liaw5Yuansheng Yang6Zhongwu Zhang7Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR ChinaKey Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China; Corresponding authors.Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR ChinaKey Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR ChinaCollege of Computer Science and Technology, Harbin Engineering University, Harbin 150001, PR ChinaDepartment of Materials Science and Engineering, The University of Tennessee, Knoxville, TN 37996-2100, USAInstitute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, PR ChinaKey Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China; Corresponding authors.Achieving high strength in Mg alloys is usually accompanied by ductility loss. Here, a novel Mg97Y1Zn1Ho1 at.% alloy with a yield strength of 403 MPa and an elongation of 10% is developed. The strength-ductility synergy is obtained by a comprehensive strategy, including a lamella bimodal microstructure design and the introduction of nano-spaced solute-segregated 14H long-period stacking-ordered phase (14H LPSO phase) through rare-earth Ho alloying. The lamella bimodal microstructure consists of elongated un-recrystallized (un-DRXed) coarse grains and fine dynamically-recrystallized grains (DRXed regions). The nano-spaced solute-segregated 14H LPSO phase is distributed in DRXed regions. The outstanding yield strength is mainly contributed by grain-boundary strengthening, 18R LPSO strengthening, and fiber-like reinforcement strengthening from the nano-spaced 14H LPSO phase. The high elongation is due primarily to the combined effects of the bimodal and lamellar microstructures through enhancing the work-hardening capability.http://www.sciencedirect.com/science/article/pii/S2213956722000317Mg wrought alloyMechanical propertiesLong-period stacking-ordered (LPSO) phaseAge-strengthening behaviorStrengthening mechanism |
| spellingShingle | Mingyu Fan Ye Cui Yang Zhang Xinghao Wei Xue Cao Peter K. Liaw Yuansheng Yang Zhongwu Zhang Achieving high strength-ductility synergy in a Mg97Y1Zn1Ho1 alloy via a nano-spaced long-period stacking-ordered phase Journal of Magnesium and Alloys Mg wrought alloy Mechanical properties Long-period stacking-ordered (LPSO) phase Age-strengthening behavior Strengthening mechanism |
| title | Achieving high strength-ductility synergy in a Mg97Y1Zn1Ho1 alloy via a nano-spaced long-period stacking-ordered phase |
| title_full | Achieving high strength-ductility synergy in a Mg97Y1Zn1Ho1 alloy via a nano-spaced long-period stacking-ordered phase |
| title_fullStr | Achieving high strength-ductility synergy in a Mg97Y1Zn1Ho1 alloy via a nano-spaced long-period stacking-ordered phase |
| title_full_unstemmed | Achieving high strength-ductility synergy in a Mg97Y1Zn1Ho1 alloy via a nano-spaced long-period stacking-ordered phase |
| title_short | Achieving high strength-ductility synergy in a Mg97Y1Zn1Ho1 alloy via a nano-spaced long-period stacking-ordered phase |
| title_sort | achieving high strength ductility synergy in a mg97y1zn1ho1 alloy via a nano spaced long period stacking ordered phase |
| topic | Mg wrought alloy Mechanical properties Long-period stacking-ordered (LPSO) phase Age-strengthening behavior Strengthening mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S2213956722000317 |
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