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Microstructure and Mechanical Properties of TiZrHfNbSc Refractory High Entropy Alloy
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Rare Metal and Metallurgy Materials Research Institute,GRIMAT Engineering Institute Co.,Ltd

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    Abstract:

    The new TiZrHfNbSc refractory high-entropy alloy was prepared by vacuum arc melting with argon shield. The microstructure were studied by XRD, SEM and DSC, the hardness and mechanical properties were measured by vickers microhardness tester and micro-control electronic universal testing machine. The results showed that the TiZrHfNbSc refractory high-entropy alloy had a single disordered BCC solid solution structure with the lattice parameter a=3.443? .The alloy density was 7.16 g/cm3 and the Vickers microhardness was 380. The alloy had high compression yield strength(σ0. 2=650MPa) and the compression deformation rate is more than 60%.The strengthening mechanism of the alloy is solid solution strengthening.

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[Jiang Honglin, Hu Zhifang, Yuan Xuetao, YinYanxi. Microstructure and Mechanical Properties of TiZrHfNbSc Refractory High Entropy Alloy[J]. Rare Metal Materials and Engineering,2020,49(8):2820~2824.]
DOI:10.12442/j. issn.1002-185X.20190617

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History
  • Received:July 24,2019
  • Revised:October 08,2019
  • Adopted:October 11,2019
  • Online: September 27,2020
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