Reversible strain induced by martensite variant rearrangement under magnetic field and mechanical loading of Fe–Pd single crystals

Abstract

Reversible and repeatable strain without external bias stress was induced by applied magnetic field-induced martensite variant rearrangement (VR) and compressive stress-induced martensite VR for Fe–Pd single crystals. The amounts of the reversible strain induced by the magnetic field and the compressive stress were 0.4% and 5.0%, respectively, where the Fe–Pd specimen was martensitically transformed from austenite to martensite which consist of two large correspondence variants (CVs). The motion of the twinning boundary between the two CVs moved by applying the magnetic field or the compressive stress, and its movement was found to be reversible and repeatable.