Enhancing strength-ductility synergy of thermally oxidized dual-phase HEA particles reinforced aluminum matrix composites via heterogeneous interface
This work firstly oxidizes single-phase high entropy alloy (HEA) to form FCC and BCC dual-phase structure, and also introduces multi-component nano-oxides on surface to prepare oxidized HEA (OHEA) reinforcements, followed by preparation of OHEA/Al composites by spark plasma sintering. The introducti...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-05-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424008706 |
| _version_ | 1797198826760568832 |
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| author | Pubo Li Zhong Wang Bingke Zhu Yongqiang Zhang Bintao Wu |
| author_facet | Pubo Li Zhong Wang Bingke Zhu Yongqiang Zhang Bintao Wu |
| author_sort | Pubo Li |
| collection | DOAJ |
| description | This work firstly oxidizes single-phase high entropy alloy (HEA) to form FCC and BCC dual-phase structure, and also introduces multi-component nano-oxides on surface to prepare oxidized HEA (OHEA) reinforcements, followed by preparation of OHEA/Al composites by spark plasma sintering. The introduction of O element accelerates interdiffusion between OHEA and Al matrix. FCC phase inside OHEA evolves into soft phase, and BCC matrix phase evolves into hard phase, forming heterogeneous interface in OHEA/Al composites. During tensile process, cracks preferentially initiated in hard phase due to severe stress concentration, and the soft phase effectively retarded crack propagation. Compared with 2024Al matrix, yield strength, tensile strength, and elongation of OHEA/Al composites increased by 35.31%, 57.34%, and 63.33%, respectively, realizing excellent combination of strength and toughness. Grain refinement, thermal mismatch, Orowan, and load transfer strengthenings synergistically improve the performance. The proposed method provides a promising avenue to optimize the properties of composites by pre-oxidizing HEA particles to construct heterogeneous interfacial structure. |
| first_indexed | 2024-04-24T07:06:02Z |
| format | Article |
| id | doaj.art-fef0449d7dca46178a5bd2b6562552ca |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-24T07:06:02Z |
| publishDate | 2024-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-fef0449d7dca46178a5bd2b6562552ca2024-04-22T04:11:44ZengElsevierJournal of Materials Research and Technology2238-78542024-05-013039293940Enhancing strength-ductility synergy of thermally oxidized dual-phase HEA particles reinforced aluminum matrix composites via heterogeneous interfacePubo Li0Zhong Wang1Bingke Zhu2Yongqiang Zhang3Bintao Wu4School of Materials and New Energy, Ningxia Key Laboratory of Photovoltaic Materials, Ningxia University, Yinchuan, 750021, PR China; Corresponding author.School of Materials and New Energy, Ningxia Key Laboratory of Photovoltaic Materials, Ningxia University, Yinchuan, 750021, PR ChinaSchool of Materials and New Energy, Ningxia Key Laboratory of Photovoltaic Materials, Ningxia University, Yinchuan, 750021, PR ChinaSchool of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR ChinaSchool of Materials and New Energy, Ningxia Key Laboratory of Photovoltaic Materials, Ningxia University, Yinchuan, 750021, PR ChinaThis work firstly oxidizes single-phase high entropy alloy (HEA) to form FCC and BCC dual-phase structure, and also introduces multi-component nano-oxides on surface to prepare oxidized HEA (OHEA) reinforcements, followed by preparation of OHEA/Al composites by spark plasma sintering. The introduction of O element accelerates interdiffusion between OHEA and Al matrix. FCC phase inside OHEA evolves into soft phase, and BCC matrix phase evolves into hard phase, forming heterogeneous interface in OHEA/Al composites. During tensile process, cracks preferentially initiated in hard phase due to severe stress concentration, and the soft phase effectively retarded crack propagation. Compared with 2024Al matrix, yield strength, tensile strength, and elongation of OHEA/Al composites increased by 35.31%, 57.34%, and 63.33%, respectively, realizing excellent combination of strength and toughness. Grain refinement, thermal mismatch, Orowan, and load transfer strengthenings synergistically improve the performance. The proposed method provides a promising avenue to optimize the properties of composites by pre-oxidizing HEA particles to construct heterogeneous interfacial structure.http://www.sciencedirect.com/science/article/pii/S2238785424008706Al matrix compositesMechanical propertiesHeterogeneous interfaceStrengthening mechanism |
| spellingShingle | Pubo Li Zhong Wang Bingke Zhu Yongqiang Zhang Bintao Wu Enhancing strength-ductility synergy of thermally oxidized dual-phase HEA particles reinforced aluminum matrix composites via heterogeneous interface Journal of Materials Research and Technology Al matrix composites Mechanical properties Heterogeneous interface Strengthening mechanism |
| title | Enhancing strength-ductility synergy of thermally oxidized dual-phase HEA particles reinforced aluminum matrix composites via heterogeneous interface |
| title_full | Enhancing strength-ductility synergy of thermally oxidized dual-phase HEA particles reinforced aluminum matrix composites via heterogeneous interface |
| title_fullStr | Enhancing strength-ductility synergy of thermally oxidized dual-phase HEA particles reinforced aluminum matrix composites via heterogeneous interface |
| title_full_unstemmed | Enhancing strength-ductility synergy of thermally oxidized dual-phase HEA particles reinforced aluminum matrix composites via heterogeneous interface |
| title_short | Enhancing strength-ductility synergy of thermally oxidized dual-phase HEA particles reinforced aluminum matrix composites via heterogeneous interface |
| title_sort | enhancing strength ductility synergy of thermally oxidized dual phase hea particles reinforced aluminum matrix composites via heterogeneous interface |
| topic | Al matrix composites Mechanical properties Heterogeneous interface Strengthening mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424008706 |
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