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Effect of Applied Pulse Current on Deformation Behavior of Ti-6Al-4V Alloy Charged with 0.27% H |
Zhiyong ZHAO1,2, Hongliang HOU1(), Yanling ZHANG1, Fan WU3, Guofeng WANG2 |
1 Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China 2 National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin 150001, China 3 School of Materials Science and Engineering, Dalian University of Technology, Dalian 116085, China |
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Cite this article:
Zhiyong ZHAO, Hongliang HOU, Yanling ZHANG, Fan WU, Guofeng WANG. Effect of Applied Pulse Current on Deformation Behavior of Ti-6Al-4V Alloy Charged with 0.27% H. Chinese Journal of Materials Research, 2018, 32(5): 321-326.
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Abstract The effect of applied pulse current on the deformation behavior of Ti-6Al-4V alloy charged with 0.27% H (mass fraction) was investigated by compression test, while the fractured surface was characterized by SEM. Results show that the mechanical property of Ti-6Al-4V alloy with and without charge of 0.27% H are both improved by the applied pulse current, i.e. the decrease of deformation resistance and increase of compression elongation. Joule heating effect of the pulse current is the main reason for the mechanical property change of Ti-6Al-4V alloy with charge of 0.27% H. The fracture mode of Ti-6Al-4V alloy changed from brittle intergranular fracture to quasi cleavage transgranular fracture due to the action of electro-plastic effect. But the quasi cleavage fracture characteristics of the Ti-6Al-4V alloy with charge of 0.27% H is not so obvious as that of the as-received alloy due to the apparent hydrogen embrittlement at low temperature.
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Received: 26 July 2017
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Fund: Supported by National Natural Science Foundation of China (Nos. 51405457 & 51605458) |
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