| METALS AND METAL MATRLX COMPOSITES |
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| Influence of Solution and Ambient Temperature on Dynamic Compression Mechanical Properties and Adiabatic Shear Sensitivity of TC21 Titanium Alloy |
| ZHANG Junxi1,2, YI Xiangbin2, SHEN Jiancheng2, CHEN Baiming1, LI Baodong2, XU Chuangwen2
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1 School of Material Engineering, Lanzhou Institute of Technology, Lanzhou 730050, China
2 Key Laboratory of Green Cutting Technology and Application in Gansu Province, Lanzhou Institute of Technology, Lanzhou 730050, China |
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Abstract By using Hopkinson pressure bar test system, the dynamic mechanical properties and adiabatic shear sensitivity of TC21 titanium alloy were studied at 1 500 s-1 strain rate for different temperatures (25—400 ℃) . The results show that the dynamic strength was enhanced and the adiabatic sensitivity became higher with the increasing of the solution temperature, while the plastic strain and the shear band width were decreased. The main reasons for these changes are the decreasing of the total area and lamellar width of α phase. At the same time, with the ambient temperature increases, the dynamic compressive strength decreases, the adiabatic sensitivity increases, and the shear band width increases.
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Published: 24 December 2020
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| Fund:This work was financially supported by the National Natural Science Foundation of China (51865026), the Gansu Natural Fund (18JR3RA229), Lanzhou Talent Innovation and Entrepreneurship Project (2017-RC-50). |
| About author:: Junxi Zhang received his M.S. degree in June 2008 from Lanzhou University of Technology. His research interests are the wear, dynamic mechanical properties and failure. He has published more than 10 journal papers as the first author. |
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2020, Vol. 34 
