High Temperature Mechanical Behavior of NbCr2/Nb Alloy

被引：0
|
作者：
Deng, Liping [1 ,2 ]
Lu, Shiqiang [1 ,2 ]
Tang, Binbing [3 ]
Lei, Zhili [2 ]
Gao, Jun [2 ]
机构：
[1] Nanjing University of Aeronautics and Astronautics, Nanjing,210016, China
[2] School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang,330063, China
[3] Nanchang University, Nanchang,330031, China
来源：
Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | 2019年 / 48卷 / 05期
关键词：
Compression testing - Deformation - Chromium alloys - Mechanical alloying - Hot pressing - Stacking faults - Strain rate - Niobium alloys - High resolution transmission electron microscopy;
D O I：
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学科分类号：
摘要：
NbCr2/Nb alloy with the composition of Nb-22.5at%Cr was prepared by mechanical alloying and hot pressing process. Then compression tests were carried out under the condition of 800~1200℃ and 0.001~0.1 s-1. High temperature mechanical behavior and deformation mechanisms of the alloy were investigated by conventional transmission electron microscopy. The results show that the peak strength of the 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 stacking fault/twins and partial dislocation. © 2019, Science Press. All right reserved.
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页码：1534 / 1538
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