Effect of the Lattice Parameter on Brittle Fracture of Metals at Low Temperatures

A. A. Khlybov, Yu. G. Kabaldin, M. S. Anosov

Abstract


The paper presents the results of tests of metallic materials at low temperatures. It is shown that with decreasing temperature, the mechanical characteristics of materials change significantly: strength limits, yield strength increase, and relative elongation decrease. It is shown that the temperature of the brittle-viscous transition depends on the lattice parameter of the materials. The higher the lattice parameter, the lower the temperature of the brittle-viscous transition. It is shown that the lattice parameter can be used to estimate the temperature of the brittle-viscous transition.

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DOI: http://dx.doi.org/10.24892/RIJIE/20190404

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