This article is cited in 3 papers

Mechanical properties, strength physics and plasticity

Influence of the Guinier–Preston zones on the concentration dependence of the yield point of the aged two-component alloys in conditions of high-speed deformation

V. V. Malashenko<sup>ab

a</sup> O O Galkin Donetsk Institute for Physics and Engineering, National Academy of Sciences of Ukraine
^b Donetsk National University

Abstract: The glide of an ensemble of edge dislocations at the high-speed deformation of an aged binary metal alloy is theoretically analyzed. The yield stress of the alloy is a nonmonotone function of the second component concentration, which has a maximum and a minimum under certain conditions. The maximum corresponds to the transfer from the dominating influence of dislocation collective interaction on creation of a spectral gap to the prevalence of the influence of collective interaction of atoms of the second component. The minimum of the obtained curve corresponds to the transfer from the prevalence of the drag of the dislocation by the Guinier–Preston zones to the prevalence of its drag by the atoms of the second component.

Keywords: dislocations, deformation, alloys, Guinier–Preston zones.

Received: 21.05.2019
Revised: 21.05.2019
Accepted: 30.05.2019

DOI: 10.21883/FTT.2019.10.48258.485

 English version: Physics of the Solid State, 2019, 61:10, 1800–1803

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