Abstract
Analysis of the influence of thermal, mechanical, and electromagnetic actions on the stability of the granular structure of dispersion-hardened alloys with a uniform distribution of incoherent mobile particles of constant radius has been performed. It has been shown that of all parameters describing the process of interaction between the grain boundary and particles, only the relative mobility μ is a function of temperature. An expression for the relative mobility, universal for all metals, has been obtained in the approximation in which the particles in the crystal matrix participate in the diffusion motion according to the Geguzin model (volume flow mechanism). It has been shown that the influence of the test temperature on the relative mobility μ and, therefore, on the stability of the granular structure is determined by the ratio of the activation energy of grain-boundary migration H to the activation energy of particle motion Q.
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 78, No. 6, pp. 100–105, November–December, 2005.
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Selivanov, N.V., Neupokoeva, I.V. Analysis of the influence of temperature and deformation on the stability of the granular structure of alloys containing second-phase particles. J Eng Phys Thermophys 78, 1149–1154 (2005). https://doi.org/10.1007/s10891-006-0047-8
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DOI: https://doi.org/10.1007/s10891-006-0047-8