Abstract Heusler-type Co–Ni–Ga shape memory alloys attracted significant scientific attention owing to excellent superelasticity in single-crystalline state. However, due pronounced anisotropy, polycrystalline suffers from transformation-induced constraints at grain boundaries and, thus, premature failure upon thermo-mechanical loading. The present study reports on a novel processing route. Hot...

The cyclic stability of superelasticity in compression [001]B2-oriented Ti49.3Ni50.7 single crystals is considered this paper. were aged at 823 K for 1.0 h air and helium. It has been experimentally shown that a two-layered surface thin film, consisting Ni-free oxide layer Ni-rich sublayer, appears after the oxidation air. layers have weak effect on forward B2-R-B19’ martensitic transformation ...

Two novel superelastic Ti-41Zr-8(10)Nb alloys were studied and compared to the reference Ti-18Zr-15Nb alloy (all in at. %) terms of their microstructure mechanical properties. A thermomechanical treatment consisting cold rolling post-deformation annealing was applied all create conditions for behavior at room temperature. X-ray diffraction analysis demonstrated considerably larger lattice disto...