SOBRERO cesar Enrique
Excellent pseudoelasticity of Al-rich Fe–33Mn–17Al–6Ni–0.15C (at%) shape memory single crystals obtained without an aging conditioning stage
VALLEJOS, JUAN MANUEL; GIORDANA, MARÍA FLORENCIA; SOBRERO, CESAR ENRIQUE; MALARRIA, JORGE ALBERTO
Acta Materialia Inc
Año: 2020 vol. 179 p. 25 - 29
The pseudoelastic behavior of a series of Fe–33Mn–17Al–6Ni–0.15C (at%) shape memory alloy single crystals was analysed with compression tests. The specimens, with different crystallographic orientations, showed almost 100% strain recovery after a full stress-induced martensitic transformation. The size and distribution of precipitates introduced in the alloy processing proved to be clearly suitable for achieving a completely reversible pseudoelastic transformation, without the need of additional aging in this Al-rich alloy. The transformation strain was analysed using the phenomenological theory of martensite transformation. This model roughly describes the pseudoelastic strain under compression as a function of the crystallographic orientation.