Research on Elevated Temperature Mechanical Properties and Microstructure of Mg-50Ti Composite
Abstract:Powder metallurgy was used to prepare Mg-50Ti composite with excellent elevated temperature mechanical properties. Tensile testing machine was used to test the room temperature and elevated temperature properties of the composite. The optical microscope and scanning electron microscope were...
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Harbin University of Science and Technology Publications
2022-12-01
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| Series: | Journal of Harbin University of Science and Technology |
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| Online Access: | https://hlgxb.hrbust.edu.cn/#/digest?ArticleID=2157 |
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| author | LI Shi-tian ZHAO Si-cong MA Tao GUO Er-jun LIU Kun ZHANG Dao-he WANG Lei FENG Yi-cheng LIU Dong-rong |
| author_facet | LI Shi-tian ZHAO Si-cong MA Tao GUO Er-jun LIU Kun ZHANG Dao-he WANG Lei FENG Yi-cheng LIU Dong-rong |
| author_sort | LI Shi-tian |
| collection | DOAJ |
| description | Abstract:Powder metallurgy was used to prepare Mg-50Ti composite with excellent elevated temperature mechanical properties. Tensile testing machine was used to test the room temperature and elevated temperature properties of the composite. The optical microscope and scanning electron microscope were used to analyze the microstructure and observe the fracture morphology. The results show that the Mg-50Ti composite achieved excellent elevated temperature mechanical properties at 200℃. Its ultimate tensile strength and elongation after fracture are 97.6 MPa and 1.2%, respectively. The tensile strength is only 5% lower than that at room temperature. As the tensile test temperature increased, the tensile strength of the composite gradually decreased, the elongation after fracture gradually increased, and the elastic modulus gradually decreased. The fracture surface of the composite under all tensile temperature is brittle fracture. The fracture mechanism includes Mg matrix cracking, reinforcement Ti particles fracture, Mg matrix and reinforcement Ti particles interface debonding. The failure fracture below 200℃ is due to the fracture of the Mg matrix and Ti particles. While the fracture mechanism of the failure fracture over 200℃ gradually transforms into the fracture of the Mg matrix, the debonding of the interface between the reinforcement and the matrix leads to the failure of the composite. |
| format | Article |
| id | doaj-art-a46301935edb4eaa991ac309b65703c3 |
| institution | DOAJ |
| issn | 1007-2683 |
| language | zho |
| publishDate | 2022-12-01 |
| publisher | Harbin University of Science and Technology Publications |
| record_format | Article |
| series | Journal of Harbin University of Science and Technology |
| spelling | doaj-art-a46301935edb4eaa991ac309b65703c32025-08-20T03:15:23ZzhoHarbin University of Science and Technology PublicationsJournal of Harbin University of Science and Technology1007-26832022-12-012706515710.15938/j.jhust.2022.06.006Research on Elevated Temperature Mechanical Properties and Microstructure of Mg-50Ti CompositeLI Shi-tian0ZHAO Si-cong1MA Tao2GUO Er-jun3LIU Kun4ZHANG Dao-he5WANG Lei6FENG Yi-cheng7LIU Dong-rong8School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, China;Key Laboratory of Advanced Manufacturing and Intelligent Technology(Ministry of Education), Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, China;Key Laboratory of Advanced Manufacturing and Intelligent Technology(Ministry of Education), Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, China;Key Laboratory of Advanced Manufacturing and Intelligent Technology(Ministry of Education), Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, China;Key Laboratory of Advanced Manufacturing and Intelligent Technology(Ministry of Education), Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, China;Key Laboratory of Advanced Manufacturing and Intelligent Technology(Ministry of Education), Harbin University of Science and Technology, Harbin 150080, ChinaAbstract:Powder metallurgy was used to prepare Mg-50Ti composite with excellent elevated temperature mechanical properties. Tensile testing machine was used to test the room temperature and elevated temperature properties of the composite. The optical microscope and scanning electron microscope were used to analyze the microstructure and observe the fracture morphology. The results show that the Mg-50Ti composite achieved excellent elevated temperature mechanical properties at 200℃. Its ultimate tensile strength and elongation after fracture are 97.6 MPa and 1.2%, respectively. The tensile strength is only 5% lower than that at room temperature. As the tensile test temperature increased, the tensile strength of the composite gradually decreased, the elongation after fracture gradually increased, and the elastic modulus gradually decreased. The fracture surface of the composite under all tensile temperature is brittle fracture. The fracture mechanism includes Mg matrix cracking, reinforcement Ti particles fracture, Mg matrix and reinforcement Ti particles interface debonding. The failure fracture below 200℃ is due to the fracture of the Mg matrix and Ti particles. While the fracture mechanism of the failure fracture over 200℃ gradually transforms into the fracture of the Mg matrix, the debonding of the interface between the reinforcement and the matrix leads to the failure of the composite.https://hlgxb.hrbust.edu.cn/#/digest?ArticleID=2157powder metallurgymg-50ti compositemicrostructureelevated temperature tensile |
| spellingShingle | LI Shi-tian ZHAO Si-cong MA Tao GUO Er-jun LIU Kun ZHANG Dao-he WANG Lei FENG Yi-cheng LIU Dong-rong Research on Elevated Temperature Mechanical Properties and Microstructure of Mg-50Ti Composite Journal of Harbin University of Science and Technology powder metallurgy mg-50ti composite microstructure elevated temperature tensile |
| title | Research on Elevated Temperature Mechanical Properties and Microstructure of Mg-50Ti Composite |
| title_full | Research on Elevated Temperature Mechanical Properties and Microstructure of Mg-50Ti Composite |
| title_fullStr | Research on Elevated Temperature Mechanical Properties and Microstructure of Mg-50Ti Composite |
| title_full_unstemmed | Research on Elevated Temperature Mechanical Properties and Microstructure of Mg-50Ti Composite |
| title_short | Research on Elevated Temperature Mechanical Properties and Microstructure of Mg-50Ti Composite |
| title_sort | research on elevated temperature mechanical properties and microstructure of mg 50ti composite |
| topic | powder metallurgy mg-50ti composite microstructure elevated temperature tensile |
| url | https://hlgxb.hrbust.edu.cn/#/digest?ArticleID=2157 |
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