Abstract

The mechanism of reversible transformation-induced plasticity of an Fe–30Mn–6Si (mass %) shape memory alloy, under tensile stress and subsequent compression, has been observed by optical and atomic force microscopy. The tensile stress-induced e (hexagonal close-packed) martensite reverts into γ (face-centered cubic) austenite after compression to zero strain. Further compression to negative strains induces a different e martensite variant from that of the tensile-stress-induced e martensite.

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