Polycrystalline structure influence on the dinamic strength and fracture character in different zones of welding joint in aluminum alloy
Plastic strain localization and fracture in the nugget and thermo-mechanically affected zone of the friction stir welded Al6061-T6 alloy are numerically investigated. Dynamic boundary-value problems are solved by the finite-difference method. Procedure for generating ordered and disordered polycrystalline microstructures experimentally observed in different weld zones is developed. Physically-based relaxation constitutive equation is developed to describe dynamic thermomechanical response of the aluminum alloy. Calculations of tension of the microstructures are performed. Effects of the ordering value and strain rate on the material dynamic strength and fracture are studied.
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Keywords
сварка трением с перемешиванием, механика сред со структурой, численное моделирование, поликристаллы, локализация пластической деформации, разрушение, friction stir welding, mechanics of nonhomogeneous materials, numerical simulation, polycrystals, plastic strain localization, fractureAuthors
| Name | Organization | |
| Balokhonov R.R. | Institute of Strength Physics and Materials Science of SB RAS | rusy@ispms.tsc.ru |
| Romanova V.A. | Institute of Strength Physics and Materials Science of SB RAS | varvara@ispms.tsc.ru |
| Sergeev M.V. | Institute of Strength Physics and Materials Science of SB RAS | sergeevmaximv@gmail.com |
| Emelianova E.S. | Institute of Strength Physics and Materials Science of SB RAS | emelianova@ispms.tsc.ru |
| Dimnich E.M. | Institute of Strength Physics and Materials Science of SB RAS | dymnich@ispms.tsc.ru |
| Zemlianov A.V. | National Research Tomsk State University | zem.aleks99@mail.ru |
| Pisarev M.A. | National Research Tomsk State University | maxim.ximka00@gmail.com |
| Evtushenko E.P. | Institute of Strength Physics and Materials Science of SB RAS | eugene@ispms.ru |
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