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邓莉萍,鲁世强,汤斌兵,雷志立,高军.NbCr2/ Nb合金高温力学行为[J].稀有金属材料与工程(英文),2019,48(5):1534~1538.[Deng Liping,Lu Shiqiang,Tang Binbing,Lei Zhili and Gao Jun.High temperature mechanical behavior of NbCr2/ Nb alloy[J].Rare Metal Materials and Engineering,2019,48(5):1534~1538.]
High temperature mechanical behavior of NbCr2/ Nb alloy
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Received:November 03, 2017  Revised:January 02, 2018
Key words: NbCr2/ Nb alloy  high-temperatureSmechanicalSproperties  dislocations  stacking fault/twins
Foundation item:国家自然科学基金(51074092),江西省自然科学基金(20161BAB206113),江西省教育厅落地计划项目(KJLD14056),江西省教育厅科技计划(GJJ160677)
Author NameAffiliation
Deng Liping,Lu Shiqiang,Tang Binbing,Lei Zhili and Gao Jun  
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      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.