Abstract
For the first time, the effect of low carbon concentration CC = 0.1at.% on the development of the FCC–HCP martensitic transformation, the value of the shape memory effect (SME), and the degree of shape recovery in “load-unloading” cycles of the [1¯44]−oriented Cr20Fe20Mn20Co35Ni4.9C0.1 (at.%) high-entropy alloy crystals under tension was studied. It was shown that, at CC = 0.1at.%, the maximum SME was achieved due to cycling: 9.4 % with increasing stresses from 50 to 150 MPa in the “cooling-heating” cycle and 12.4 % with increasing transformation strain in the “load-unloading” cycle and subsequent heating. The degree of shape recovery with increase in the number of “load-unloading” cycles (n = 1–15) was 98–100 % with a transformation strain of 10 % in cycle.
Published Version
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