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Abstract. The molecular orbital method was used to identify Ni-free shape memory alloys in the Ti-Nb-Zr system. The alloys were manufactured via the arc melting technique, in Ar atmosphere and subsequently solution annealed with quenching in water. The corresponding microstructure was analyzed by X-ray diffraction and scanning electron microscopy to show the formation of martensite. A chart detailing the sequence of transformation was drawn based on calorimetric measurements and structural analysis.

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