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High temperature mechanical behavior of NbCr2/ Nb alloy
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Nanchang Hongkong University

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    Abstract:

    Compression tests between 800 and 1200℃ and 10-3 and 10-1s-1 and conventional transmission electron microscopy have been employed to investigate the high temperature mechanical behavior and the deformation mechanisms of the NbCr2/Nb alloy with the composition Nb-22.5 at.% Cr, prepared by mechanical alloying and hot pressing process. The results show that the peak strength of NbCr2/Nb alloy decreases with the increase of deformation temperature and the decrease of strain rate. The main deformation mechanism of Nb matrix is the slip of dislocation. While, the deformation mechanism of the Laves phase NbCr2 is through by stack fault/ twins and partial dislocation.

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[Deng Liping, Lu Shiqiang, Tang Binbing, Lei Zhili, Gao Jun. High temperature mechanical behavior of NbCr2/ Nb alloy[J]. Rare Metal Materials and Engineering,2019,48(5):1534~1538.]
DOI:10.12442/j. issn.1002-185X.20171000

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History
  • Received:November 03,2017
  • Revised:January 02,2018
  • Adopted:January 10,2018
  • Online: June 04,2019
  • Published: