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Abstract
Thermal explosion mode of self-propagating high-temperature synthesis by which time and energy can be saved and the cast product has the least interstitial contamination and the greatest homogeneity is used to successfully produce the Ti-Ni shape memory alloy. The specimens after hot and cold rolling are solution treated and aged. MS and TR have their maxima at ageing temperatures of 500 and 450°C, respectively. These temperatures rise with the Ni content. The rate of rise of Ms and TR in aged specimens depends on the composition so that in the Ti-50.33 at.% Ni alloy, MS is greater than AS while in the Ti-50.23 at.% Ni alloy, the reverse is observed. The rate of variation of MS. and AS decreases with increasing ageing temperature when solution treatment is followed by cold working. Under this condition, TR is greater than that for the specimens without cold working. Cold working strains produce a nonuniform effect on MS and TR in aged specimens.
