Microstructure and mechanical performances of NiCoFeAlTi high-entropy intermetallic reinforced CoCrFeMnNi high-entropy alloy composites manufactured by selective laser melting
Multi-component alloys have been confirmed to be excellent reinforcing phases in high-entropy alloy-based composite. However, achieving a balance between strength and ductility by controlling the reinforcement content remains a major challenge in the design of high-entropy alloy-based composites. In...
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542402550X |
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| author | Hong Yang Pan Ma Zhiyu Zhang Xiaochang Xie Ping Yang Han Zhang Yandong Jia Konda Gokuldoss Prashanth |
| author_facet | Hong Yang Pan Ma Zhiyu Zhang Xiaochang Xie Ping Yang Han Zhang Yandong Jia Konda Gokuldoss Prashanth |
| author_sort | Hong Yang |
| collection | DOAJ |
| description | Multi-component alloys have been confirmed to be excellent reinforcing phases in high-entropy alloy-based composite. However, achieving a balance between strength and ductility by controlling the reinforcement content remains a major challenge in the design of high-entropy alloy-based composites. In this study, CoCrFeMnNi HEA/NiCoFeAlTi HER high-entropy alloy composites were prepared using SLM technology. Interestingly, gas-atomized NiCoFeAlTi high-entropy intermetallic (HER) powder was selected as the reinforcing phase, and the CoCrFeMnNi HEA matrix was used for comparison. The influence of the reinforcement content on the composite was investigated, and high-performance HEA/HER composites were obtained, with the strengthening mechanism elucidated. The results showed that the composite with 1 wt% HER reinforcement exhibited the optimal performance, with hardness, yield strength, ultimate tensile strength, and ductility at room temperature being approximately 226.9 HV, 562 MPa, 683 MPa, and 16%, respectively. The excellent mechanical properties at both room and elevated temperatures are attributed to the synergistic effects of heterogeneous microstructure strengthening, grain refinement, and precipitation strengthening. This work provides a foundation for the development of high-entropy alloy composites reinforced by high-entropy intermetallics. |
| format | Article |
| id | doaj-art-33d7b780513049f79405172733b0ab88 |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-33d7b780513049f79405172733b0ab882025-08-20T02:39:04ZengElsevierJournal of Materials Research and Technology2238-78542024-11-01336275628710.1016/j.jmrt.2024.11.022Microstructure and mechanical performances of NiCoFeAlTi high-entropy intermetallic reinforced CoCrFeMnNi high-entropy alloy composites manufactured by selective laser meltingHong Yang0Pan Ma1Zhiyu Zhang2Xiaochang Xie3Ping Yang4Han Zhang5Yandong Jia6Konda Gokuldoss Prashanth7School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai, ChinaSchool of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai, China; State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, 150001, China; Corresponding author. School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai, China.School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai, ChinaBeijing Institute of Aeronautical Materials, Beijing, 101101, ChinaBeijing Institute of Aeronautical Materials, Beijing, 101101, ChinaBeijing Institute of Aeronautical Materials, Beijing, 101101, ChinaLaboratory for Microstructures, Institute of Materials, Shanghai University, Shanghai, 200444, China; Corresponding author.Department of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086, Tallinn, Estonia; CBCMT, School of Mechanical Engineering, Vellore Institute of Technology, Vellore, 630014, Tamil Nadu, IndiaMulti-component alloys have been confirmed to be excellent reinforcing phases in high-entropy alloy-based composite. However, achieving a balance between strength and ductility by controlling the reinforcement content remains a major challenge in the design of high-entropy alloy-based composites. In this study, CoCrFeMnNi HEA/NiCoFeAlTi HER high-entropy alloy composites were prepared using SLM technology. Interestingly, gas-atomized NiCoFeAlTi high-entropy intermetallic (HER) powder was selected as the reinforcing phase, and the CoCrFeMnNi HEA matrix was used for comparison. The influence of the reinforcement content on the composite was investigated, and high-performance HEA/HER composites were obtained, with the strengthening mechanism elucidated. The results showed that the composite with 1 wt% HER reinforcement exhibited the optimal performance, with hardness, yield strength, ultimate tensile strength, and ductility at room temperature being approximately 226.9 HV, 562 MPa, 683 MPa, and 16%, respectively. The excellent mechanical properties at both room and elevated temperatures are attributed to the synergistic effects of heterogeneous microstructure strengthening, grain refinement, and precipitation strengthening. This work provides a foundation for the development of high-entropy alloy composites reinforced by high-entropy intermetallics.http://www.sciencedirect.com/science/article/pii/S223878542402550XSelective laser meltingCoCrFeMnNi compositesHigh entropy intermetallicsMicrostructureMechanical propertiesStrengthening mechanism |
| spellingShingle | Hong Yang Pan Ma Zhiyu Zhang Xiaochang Xie Ping Yang Han Zhang Yandong Jia Konda Gokuldoss Prashanth Microstructure and mechanical performances of NiCoFeAlTi high-entropy intermetallic reinforced CoCrFeMnNi high-entropy alloy composites manufactured by selective laser melting Journal of Materials Research and Technology Selective laser melting CoCrFeMnNi composites High entropy intermetallics Microstructure Mechanical properties Strengthening mechanism |
| title | Microstructure and mechanical performances of NiCoFeAlTi high-entropy intermetallic reinforced CoCrFeMnNi high-entropy alloy composites manufactured by selective laser melting |
| title_full | Microstructure and mechanical performances of NiCoFeAlTi high-entropy intermetallic reinforced CoCrFeMnNi high-entropy alloy composites manufactured by selective laser melting |
| title_fullStr | Microstructure and mechanical performances of NiCoFeAlTi high-entropy intermetallic reinforced CoCrFeMnNi high-entropy alloy composites manufactured by selective laser melting |
| title_full_unstemmed | Microstructure and mechanical performances of NiCoFeAlTi high-entropy intermetallic reinforced CoCrFeMnNi high-entropy alloy composites manufactured by selective laser melting |
| title_short | Microstructure and mechanical performances of NiCoFeAlTi high-entropy intermetallic reinforced CoCrFeMnNi high-entropy alloy composites manufactured by selective laser melting |
| title_sort | microstructure and mechanical performances of nicofealti high entropy intermetallic reinforced cocrfemnni high entropy alloy composites manufactured by selective laser melting |
| topic | Selective laser melting CoCrFeMnNi composites High entropy intermetallics Microstructure Mechanical properties Strengthening mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S223878542402550X |
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