Deformation behavior of tantalum and a tantalum tungsten alloy |
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| Affiliation: | 1. College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China;2. Electron Microscopy Center of Chongqing University, Chongqing University, Chongqing 400044, China;3. Shenyang National Laboratory for Materials Science, Chongqing University, Chongqing 400044, China;4. School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471023, China;5. School of Metallurgy and Material Engineering, Chongqing University of Science and Technology, Chongqing 401331, China;1. Applied Materials Physics, Department of Materials Science and Engineering, Royal Institute of Technology, Stockholm SE-100 44, Sweden;2. School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, 2 West Wenhua Road, Weihai 264209, China;3. Department of Physics and Astronomy, Division of Materials Theory, Uppsala University, Box 516, SE-75120 Uppsala, Sweden;4. Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, P.O. Box 49, H-1525 Budapest, Hungary |
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| Abstract: | ![]()
A comparative study of the deformation behavior of tantalum and a tantalum 2.5 wt.% tungsten alloy is carried out. High strain-rate experimental data are used to develop phenomenological constitutive relations. The temperature and the strain-rate sensitivity of the flow stresses are compared. It is observed that although the flow stress for the Ta–2.5%W alloy is greater than that of Ta, the corresponding temperature and strain-rate sensitivity is less pronounced. Ta–2.5%W experiences a solid-solution softening, wherein the athermal stress component has increased, while the thermal component has decreased by the alloying. |
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