Yu. I. Chumlyakov, I. V. Kireeva, V. V. Poklonov, Z. V. Pobedennaya, I. Karaman, “The shape-memory effect and superelasticity in single-crystal ferromagnetic alloy FeNiCoAlTi”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 2014, Volume 40, Issue 17,Pages <nobr>47

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The shape-memory effect and superelasticity in single-crystal ferromagnetic alloy FeNiCoAlTi

Yu. I. Chumlyakov^a, I. V. Kireeva^a, V. V. Poklonov^a, Z. V. Pobedennaya^a, I. Karaman^ab

^a Tomsk State University
^b Department of Mechanical Engineering, Texas A&M University, TX 77843, USA

Abstract: The reversible thermoelastic $\gamma$–$\alpha'$ martensitic transformations under load in new single-crystal ferromagnetic Fe–28%Ni–17%Co–11.5%Al-2.5%Ti (at%) alloy have been studied. It is shown for the first time that precipitation of dispersed particles of the $\gamma'$ phase during aging for 7 h at 973 K induces the shape-memory effect and superelasticity in [001] single crystals of Fe–Ni–Co–Al–Ti alloy upon tensile strain. Superelasticity $\varepsilon_{SE}$ = 4.5–6% manifests itself in the temperature range $T$ = 183–333 K.

Received: 14.04.2014