The plastic properties of materials must be used more fully as working temperatures and temperature gradients increase. The results of tests performed on refractory chromium-nickel alloys with combined low-cycle strain with prescribed total amplitudes and strain increments per cycle are presented. The results are compared with those obtained with rigid, cyclic, sign-alternating, and monotonic strain. A method of constructing mathematical models of a material that take account of short- and long-time characteristics of a metal in combination with the possibility of their direct use in readily available packages implementing the finite-elements method is described.
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Translated from Atomnaya Énergiya, Vol. 119, No. 3, pp. 145–155, September, 2015.
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Dragunov, Y.G., Evropin, S.V., Gadenin, M.M. et al. Stress–Strain Kinetics in Calculations of High-Temperature Strength and Longevity of Reactor Structures. At Energy 119, 177–189 (2016). https://doi.org/10.1007/s10512-015-0046-y
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DOI: https://doi.org/10.1007/s10512-015-0046-y