Effect of Ti particles on microstructure and mechanical properties of TiP/AZ91 composites
Ti particles (5 wt%) reinforced AZ91 Mg matrix composites (TiP/AZ91 composites) were prepared by powder metallurgy. As a result, the strength and ductility of TiP/AZ91 composites were improved compared with AZ91 alloy. The ultimate tensile stress (UTS) increased significantly from 163 MPa to 221 MPa...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422019184 |
| _version_ | 1797943048739487744 |
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| author | Dongmei Pu Shifen Wu Hong Yang Xianhua Chen Jianbo Li Xiaowei Feng Kaihong Zheng Fusheng Pan |
| author_facet | Dongmei Pu Shifen Wu Hong Yang Xianhua Chen Jianbo Li Xiaowei Feng Kaihong Zheng Fusheng Pan |
| author_sort | Dongmei Pu |
| collection | DOAJ |
| description | Ti particles (5 wt%) reinforced AZ91 Mg matrix composites (TiP/AZ91 composites) were prepared by powder metallurgy. As a result, the strength and ductility of TiP/AZ91 composites were improved compared with AZ91 alloy. The ultimate tensile stress (UTS) increased significantly from 163 MPa to 221 MPa, and the elongation increased from 3.5% to 10.9%. The YS and hardness decreased due to the slightly coarser grain size. The microstructural results showed that Ti particles were uniformly dispersed in the Mg matrix and the content of Mg17Al12 was reduced, indicating that Ti particles can inhibit the precipitation of the second phase. The interface between Ti particle and Mg matrix showed that the Al3Ti layer was formed at the edge of the Ti particles. EBSD was used to analyze the twins and dislocations at different tensile strains. During the tensile deformation at room temperature, many tensile twins and dislocations formed in the TiP/AZ91 composites. The tensile twins and dislocations could coordinate plastic deformation, thus improving the elongation of the TiP/AZ91 composites. |
| first_indexed | 2024-04-10T20:18:13Z |
| format | Article |
| id | doaj.art-d44f304a03a34519804ff8be6d806f88 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-10T20:18:13Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-d44f304a03a34519804ff8be6d806f882023-01-26T04:46:04ZengElsevierJournal of Materials Research and Technology2238-78542023-01-012213621374Effect of Ti particles on microstructure and mechanical properties of TiP/AZ91 compositesDongmei Pu0Shifen Wu1Hong Yang2Xianhua Chen3Jianbo Li4Xiaowei Feng5Kaihong Zheng6Fusheng Pan7College of Materials Science & Engineering, Chongqing University, 400045, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, 400045, ChinaCollege of Materials Science & Engineering, Chongqing University, 400045, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, 400045, ChinaCollege of Materials Science & Engineering, Chongqing University, 400045, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, 400045, China; Corresponding author.College of Materials Science & Engineering, Chongqing University, 400045, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, 400045, China; Corresponding author.College of Materials Science & Engineering, Chongqing University, 400045, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, 400045, ChinaInstitute of New Materials, Guangdong Academy of Sciences, Guangzhou, 510650, ChinaInstitute of New Materials, Guangdong Academy of Sciences, Guangzhou, 510650, ChinaCollege of Materials Science & Engineering, Chongqing University, 400045, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, 400045, ChinaTi particles (5 wt%) reinforced AZ91 Mg matrix composites (TiP/AZ91 composites) were prepared by powder metallurgy. As a result, the strength and ductility of TiP/AZ91 composites were improved compared with AZ91 alloy. The ultimate tensile stress (UTS) increased significantly from 163 MPa to 221 MPa, and the elongation increased from 3.5% to 10.9%. The YS and hardness decreased due to the slightly coarser grain size. The microstructural results showed that Ti particles were uniformly dispersed in the Mg matrix and the content of Mg17Al12 was reduced, indicating that Ti particles can inhibit the precipitation of the second phase. The interface between Ti particle and Mg matrix showed that the Al3Ti layer was formed at the edge of the Ti particles. EBSD was used to analyze the twins and dislocations at different tensile strains. During the tensile deformation at room temperature, many tensile twins and dislocations formed in the TiP/AZ91 composites. The tensile twins and dislocations could coordinate plastic deformation, thus improving the elongation of the TiP/AZ91 composites.http://www.sciencedirect.com/science/article/pii/S2238785422019184Mg matrix compositesTi particlesTensile deformationTensile twinsDislocations |
| spellingShingle | Dongmei Pu Shifen Wu Hong Yang Xianhua Chen Jianbo Li Xiaowei Feng Kaihong Zheng Fusheng Pan Effect of Ti particles on microstructure and mechanical properties of TiP/AZ91 composites Journal of Materials Research and Technology Mg matrix composites Ti particles Tensile deformation Tensile twins Dislocations |
| title | Effect of Ti particles on microstructure and mechanical properties of TiP/AZ91 composites |
| title_full | Effect of Ti particles on microstructure and mechanical properties of TiP/AZ91 composites |
| title_fullStr | Effect of Ti particles on microstructure and mechanical properties of TiP/AZ91 composites |
| title_full_unstemmed | Effect of Ti particles on microstructure and mechanical properties of TiP/AZ91 composites |
| title_short | Effect of Ti particles on microstructure and mechanical properties of TiP/AZ91 composites |
| title_sort | effect of ti particles on microstructure and mechanical properties of tip az91 composites |
| topic | Mg matrix composites Ti particles Tensile deformation Tensile twins Dislocations |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422019184 |
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