Free volume simulation for severe plastic deformation of metallic glasses |
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| Affiliation: | 1. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, PR China;2. Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok 10330, Thailand;3. Hebei Vocational and Technical College of Building Materials, Qinhuangdao 066004, PR China;1. International Center for Applied Mechanics, State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi’an Jiaotong University, Xi’an 710049, China;2. Institute of High Performance Computing, A1Star, Singapore 138632, Singapore;1. Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India;2. Department of Chemistry, Sandip University, Nashik, Maharashtra, 422213, India;3. Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India;4. Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India;5. Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India |
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| Abstract: | Evolution of internal parameters of metallic glasses subjected to high pressure torsion was simulated using a free volume based thermo-mechanical model. Steady state has been predicted in the whole, plastically sheared volume for large strains irrespectively from the applied revolution rate. Based on the simplification of the model equations in steady state, simple methods were obtained to determine the in situ temperature increase and stress distribution from external torque measurements. |
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