Open AccessВлияние зон Гинье-Престона на концентрационную зависимость предела текучести состаренных двухкомпонентных сплавов в условиях высокоскоростной деформации
Author(s) -
В.В. Малашенко
Publication year - 2019
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2019.10.48258.485
Subject(s) - drag , component (thermodynamics) , dislocation , alloy , materials science , deformation (meteorology) , condensed matter physics , physics , mechanics , thermodynamics , metallurgy , composite material
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.