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Kodai Niitsu and Ryosuke Kainuma Effect of annealing on stress-induced transformation behaviors at low temperatures in a Ti–51.8 at.% Ni shape memory alloy physica status solidi (b) 251

Version of Record online: 3 APR 2014 | DOI: 10.1002/pssb.201350418

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Temperature dependences of the critical stresses, σMs, σAf and σ0, in the stress-induced transformation for TiNi specimens annealed at 473 K for 0, 50 and 150 min are shown in the image. Accompanied by the appearance of several nanometer-size Ti3Ni4-like precipitates with ageing, the emergence of superelasticity tends to be strong, suggesting a stabilization of the parent phase. In this article, effects of Ti3Ni4 precipitates on superelastic properties at low temperatures are discussed.

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