Influence of ultrasonic vibration on tensile properties and dislocation distribution of titanium foil
JIANG Shao-song1, YANG Tian-hao2, SUN Hong-yu3, HE Yu-shi1, LU Zhen1, WANG Rui-zhuo1
1. National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin 150001, China;
2. Shanghai Aerospace Equipment Manufactory, Shanghai 200245, China;
3. Beijing Spacecrafts Manufacturing Co., Ltd., Beijing 100094, China
Abstract：The plastic deformation with respect to dislocation distribution of titanium foil under ultrasonic vibration was studied. The influencing rule of different ultrasonic vibration modes on the stress-strain,elongation and dislocation distribution of titanium foil during plastic deformation was studied by uniaxial tensile test and microstructure analysis. The results show that the flow stress of titanium foil can be reduced by about 80% and the elongation can increase from 40.33% to 54.46% during ultrasonic vibration. TEM shows that the dislocations tend to be parallel to each other without large amount of entanglement, and the distribution of dislocations in the samples without ultrasonic vibration is chaotic and seriously entangled.
蒋少松, 杨天豪, 孙宏宇, 何玉石, 卢振, 王瑞卓. 超声波振动对钛箔拉伸性能及位错分布的影响[J]. 材料工程, 2019, 47(2): 84-89.
JIANG Shao-song, YANG Tian-hao, SUN Hong-yu, HE Yu-shi, LU Zhen, WANG Rui-zhuo. Influence of ultrasonic vibration on tensile properties and dislocation distribution of titanium foil. Journal of Materials Engineering, 2019, 47(2): 84-89.
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2019, Vol. 47 
