Effects of Heat Treatment on Microstructure and Dynamic Shear Localization of U-Nb Alloy

被引：0
作者：
Shi Jie [1 ]
Wang Xiaoying [1 ]
Zhao Yawen [1 ]
Wu Xiangchao [1 ]
机构：
[1] Sci & Technol Surface Phys & Chem Lab, Mianyang 621907, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2014年 / 43卷 / 11期
关键词：
uranium-niobium; adiabatic shear bands (ASBs); microstructure; BANDS;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Dynamic deformation and failure behavior of U-Nb alloy with different heat treatment (200 degrees C/2 h, 400 degrees C /2 h, 600 degrees C /2 h) were studied. Hat-shape specimens were used in an attempt to induce strain localization in U-Nb alloy. Dynamic load was applied to specimens by use of a Split Hopkinson Press Bar (SHPB) apparatus. The microstructure was examined by optical microscopy and scanning electron microscopy. Results show that the appearance of adiabatic shear bands (ASBs) is relative to the microstructure of material. Different kinds of ASBs are found in 200 degrees C/2 h and 600 degrees C/2 h specimens, while specimens (400 degrees C/2 h) exhibit dimple-like feature, indicating that significant melting takes place during deformation under high strain rate loading condition.
引用
收藏
页码：2836 / 2840
页数：5
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