Open AccessНеупругость и наноструктурная дислокационная деформация сплава алюминия с кремнием с супермодифицированной эвтектической структурой
Author(s) -
С.П. Никаноров,
Б.К. Кардашев,
В.Н. Осипов,
В.В. Каминский,
Н.В. Шаренкова
Publication year - 2019
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/jtf.2019.08.47894.72-19
Subject(s) - materials science , eutectic system , composite material , lamellar structure , silicon , alloy , residual stress , deformation (meteorology) , metallurgy , strontium , fiber , physics , nuclear physics
Young’s modulus and the logarithmic decrement of oscillations at a frequency of ~100 kHz as well as the subgrain size and residual stresses in the strontium modified alloy of aluminum with 15 wt % silicon have been studied. The alloy was obtained with a solidification rate of 1 mm/s at the shifted eutectic point. The dependence of inelastic dislocation deformation on the applied oscillating stress has been obtained and analyzed. The effect of strontium modification on the microstrain diagram can be accounted for by transformation of the lamellar fiber structure of eutectic silicon into a superfine fiber structure.