The temperature dependence of pseudoelastic behavior in the cycle loading—unloading Mg and the alloy Mg—9Al—0,2Ca—0,08Ti

Abstract

The temperature dependence of the pseudoelastic behavior of magnesium and its alloy is studied. In the article offers an original methodology for comparative analysis of ascending sections of pseudoelastic loops, obtained after different plastic deformation. In analyzing the regularities of the formation of pseudoelastic deformation, the presence of deformation defects was taken into account, their interaction with twins and the mechanisms by which plastic deformation of the sample under study takes place. It was shown that at the test temperature 100 °С the behavior of the pseudoelastic loops is the same as at room temperature. At the test temperature 200 °С in the samples of magnesium, the pseudoelasticity practically disappears. The change in the mechanism of deformation from basis sliding to nonbasis and to diffusion creep leads to the disappearance of the pseudoelasticity effect Full text download