D. R. Abashev, V. S. Bondar, P. O. Dikovitskyi, S. V. Morozov, O. E. Larionova
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引用次数: 0
Abstract
A variant of thermoviscoplasticity theory is proposed, by mathematical modeling of the viscoplastic behavior of a granulated nickel alloy under high-temperature conditions and based on flow theory with combined hardening. The variant of thermoviscoplasticity theory is generalized to nonisothermal loading and the dependence of the loading process on the strain rate. The results of experiments on uniaxial tension for cylindrical samples of a granulated nickel alloy at high temperatures and various strain rates are presented. The calculated viscoplastic strain diagrams are compared with experimental ones. Satisfactory agreement between the calculated and experimental results is observed, which indicates the adequacy of this variant thermoviscoplasticity theory and the method for identifying the material parameters.
期刊介绍：
High Temperature is an international peer reviewed journal that publishes original papers and reviews written by theoretical and experimental researchers. The journal deals with properties and processes in low-temperature plasma; thermophysical properties of substances including pure materials, mixtures and alloys; the properties in the vicinity of the critical point, equations of state; phase equilibrium; heat and mass transfer phenomena, in particular, by forced and free convections; processes of boiling and condensation, radiation, and complex heat transfer; experimental methods and apparatuses; high-temperature facilities for power engineering applications, etc. The journal reflects the current trends in thermophysical research. It presents the results of present-day experimental and theoretical studies in the processes of complex heat transfer, thermal, gas dynamic processes, and processes of heat and mass transfer, as well as the latest advances in the theoretical description of the properties of high-temperature media.
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