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Martensitic transformation and shape memory effect are investigated in Hf– Nb alloys. Niobium content varies in a range of 15 at.% to 50 at.%. Prior to investigation samples are quenched in water. Phase composition, microstructure and functional properties are investigated. For the first time the presence of a martensitic-type phase transition, accompanied by the shape memory effect, is observed in the quenched Hf75Nb25 alloy. While for alloys with a higher concentration of hafnium, the quenching temperature will be obviously higher than 1500°C.

Martensitic Transformation in Quenched Hf–Nb Alloys