Abstract.
Effect of oxidation on transformation and deformation behavior was investigated in Ni-Ti alloy by comparing the as-oxidized specimen and the polished one. Ti's preferable reaction with oxygen results in the compounds such as Ni3Ti and Ni4Ti3, and the Ni-rich region between matrix and oxide. Martensitic transformation did not take place in the Ni-rich region due to the high Ni content while R phase transformation temperature decreased significantly. Oxidation deteriorated the superelasticity due to the formation of the compound as well as the Ni-rich region in which slip deformation occurs instead of induction of martensite.
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Kim, K., Jee, K., Kim, Y. et al. Effect of oxidation on transformation and deformation behavior in Ni-Ti alloy. Eur. Phys. J. Spec. Top. 158, 67–71 (2008). https://doi.org/10.1140/epjst/e2008-00655-5
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DOI: https://doi.org/10.1140/epjst/e2008-00655-5