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Microstructures and mechanical properties of tungsten particle reinforced 6061Al composites fabricated by SPS and hot rolling
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1.College of Mechanical and Vehicle Engineering,Taiyuan University of Technology;2.College of Materials Science and Engineering,Taiyuan University of Technology

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    Abstract:

    In this study, tungsten particle (Wp) reinforced 6061Al matrix composites with different volume fractions (1~7%) were fabricated by spark plasma sintering (SPS) followed by hot-rolling. The effects of Wp content on the microstructure, mechanical properties and electrical resistivity of the as-rolled composites were investigated. The results show that the W particles were homogeneously distributed in the metal matrix, achieving excellent metallurgical bonding. At the interface of Wp/6061Al, element solid solution and WAl12 intermetallics were formed during the fabrication process. The mechanical test results show that, with the increase of W volume fraction, relative density and ductility of the as-rolled composites decreased while the tensile strength first increased and then decreased. It is noteworthy that both high tensile strength and ductility were obtained by the composites with 1 and 3 vol.% Wp, being 192.85 MPa ,16.84% and 315.18 MPa ,11.93%, respectively. Besides, the fabricated Wp reinforced 6061Al matrix composites had excellent electrical conductivity and the increase of Wp content had a little influence on the electrical conductivity.

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[Yang Tao, Chen Hongsheng, Wang Wenxian, Zhang Yuyang, Liu Ruifeng. Microstructures and mechanical properties of tungsten particle reinforced 6061Al composites fabricated by SPS and hot rolling[J]. Rare Metal Materials and Engineering,2020,49(11):3702~3708.]
DOI:10.12442/j. issn.1002-185X.20191065

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History
  • Received:December 17,2019
  • Revised:January 21,2020
  • Adopted:February 20,2020
  • Online: December 09,2020
  • Published: