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Transformation behavior and shape memory effect of Ti50−x Ni48Fe2Nb x alloys by aging treatment

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Abstract

The influence of aging treatment on transformation behavior and shape memory of the Ti50−x Ni48Fe2Nb x (x=0, 0.6, 0.8, 1.0, and 1.2) alloys was investigated using differential scanning calorimeter (DSC), mechanical drawing machine, and microhardness tester in this paper. It is indicated that the aging treatment has a significant effect on the phase transformation temperatures (M s, M f, M p, A s, A f, and A p) and microhardness of the samples. The phase transformation temperatures are found to decrease initially with the increasing aging temperature from 300 to 500 °C and increase with further increase of the aging temperature. The aging treatment at intermediate temperature between 400 and 500 °C results in an improved shape memory effect. In addition, the highest microhardness value is also obtained.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing, 100191, China

    Qing Xu & Fushun Liu

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  1. Qing Xu
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  2. Fushun Liu
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Correspondence to Fushun Liu.

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Xu, Q., Liu, F. Transformation behavior and shape memory effect of Ti50−x Ni48Fe2Nb x alloys by aging treatment. Rare Metals 31, 311–317 (2012). https://doi.org/10.1007/s12598-012-0511-x

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  • DOI: https://doi.org/10.1007/s12598-012-0511-x

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