Ag/Ti3AlC2 Composites Prepared by Equal Channel Angular Pressing Followed by Heat Treatment

WANG Dan-Dan1 TIAN Wu-Bian1 DING Jian-Xiang2 MA Ai-Bin3 ZHANG Pei-Gen1 HE Wei1 SUN Zheng-Ming1

(1.School of Materials Science and Engineering, Southeast University, Nanjing, China 211189)
(2.School of Materials Science and Engineering, Anhui University of Technology, Ma’anshan, China 243002)
(3.College of Mechanics and Materials, Hohai University, Nanjing, China 210098)
【Knowledge Link】equal channel angular pressing

【Abstract】Equal channel angular pressing (ECAP) followed by heat treatment was carried out to prepare Ag/Ti3AlC2 composites. The effects of heat treatment on the resistivities and mechanical properties of the Ag/Ti3AlC2 composites were investigated. Results show that ECAP effectively densifies the Ag/Ti3AlC2 compacts, and the layered Ti3AlC2 particles are delaminated and aligned due to the shearing effect during ECAP. Alignment of Ti3AlC2 particles resulted in the anisotropy of electrical and mechanical properties of the composites. Perpendicular to the alignment of Ti3AlC2 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 Ti3AlC2 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/Ti3AlC2; alignment; heat treatment;


【Funds】 National Natural Science Foundation of China (51731004, 51671054) Fundamental Research Funds for the Central Universities (2242019K40056) Natural Science Foundation of Jiangsu Province (BK20181285)

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(Translated by LI ZP)


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This Article


CN: 31-1363/TQ

Vol 35, No. 01, Pages 46-52

January 2020


Article Outline



  • 1 Experimental method
  • 2 Results and discussion
  • 3 Conclusions
  • References