Ag/Ti 3AlC 2 Composites Prepared by Equal Channel Angular Pressing Followed by Heat Treatment

【Author】

WANG Dan-Dan;TIAN Wu-Bian;DING Jian-Xiang;MA Ai-Bin;ZHANG Pei-Gen;HE Wei;SUN Zheng-Ming

【Institution】

School of Materials Science and Engineering, Southeast University;School of Materials Science and Engineering, Southeast University;School of Materials Science and Engineering, Anhui University of Technology;College of Mechanics and Materials, Hohai University;School of Materials Science and Engineering, Southeast University;School of Materials Science and Engineering, Southeast University;School of Materials Science and Engineering, Southeast University

【Abstract】

Equal channel angular pressing (ECAP) followed by heat treatment was carried out to prepare Ag/Ti 3AlC 2 composites. The effects of heat treatment on the resistivities and mechanical properties of the Ag/Ti 3AlC 2 composites were investigated. Results show that ECAP effectively densifies the Ag/Ti 3AlC 2 compacts, and the layered Ti 3AlC 2 particles are delaminated and aligned due to the shearing effect during ECAP. Alignment of Ti 3AlC 2 particles resulted in the anisotropy of electrical and mechanical properties of the composites. Perpendicular to the alignment of Ti 3AlC 2 particles displayed high resistivity and compressive strength. Moreover, the resistivity and compressive strength increased with following heat treatment, yielding the maximum at 800 ℃. These increments were attributed to the enhanced interfacial reactions between Ag and Ti 3AlC 2 at high temperatures. The findings in this study indicate that densification and microstructural control of Ag/MAX composites can be achieved simultaneously by ECAP, while the following heat treatment can tailor their properties.

【Keywords】

equal channel angular pressing (ECAP);Ag/Ti 3AlC 2;alignment;heat treatment

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Total: 21 articles

  • [1] Min Zhang;Wu-bian Tian;Pei-gen Zhang;Jian-xiang Ding;Ya-mei Zhang;Zheng-ming Sun;Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University;Jiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University;, Microstructure and properties of Ag–Ti_3SiC_2 contact materials prepared by pressureless sintering, International Journal of Minerals Metallurgy and Materials,
  • [2] DING Jianxiang;SUN Zhengming;ZHANG Peigen;TIAN Wubian;ZHANG Yamei;Jiangsu Key Laboratory of Advanced Metallic Materials,School of Materials Science and Engineering,Southeast University;Jiangsu Key Laboratory of Construction Materials,School of Materials Science and Engineering,Southeast University;, Current Research Status and Outlook of Ag-based Contact Materials, Materials Review,
  • [3] Jianxiang DING;Wubian TIAN;Peigen ZHANG;Min ZHANG;Jian CHEN;Yamei ZHANG;Zhengming SUN;Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University;Jiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University;, Preparation and arc erosion properties of Ag/Ti_2SnC composites under electric arc discharging, Journal of Advanced Ceramics,
  • [4] DING Jianxiang;TIAN Wubian;WANG Dandan;ZHANG Peigen;CHEN Jian;SUN Zhengming;Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education,School of Materials Science and Engineering, Anhui University of Technology;Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering,Southeast University;, Arc Erosion and Degradation Mechanism of Ag/Ti_2AlC Composite, Acta Metallurgica Sinica,

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