Abstract
An abnormal phenomenon was investigated in Ti44Ni51Nb5 alloy which exhibits an absence of martensite transformation and a negative temperature dependence of electrical resistivity with the temperature decreasing. X-ray diffraction (XRD) analysis shows the matrix phase keeps a B2 structure during cooling without a martensite transformation, and dynamic mechanical analysis displays a frequency-dependent AC modulus/loss anomaly at T g according to Vogel-Fulcher relation. Simultaneously, transmission electronic microscope (TEM) analysis manifests the superlattice spots at near 1/3 commensurate position, implying an existence of strain nanodomains with an R-like structure. And above experiment results provide evidence for the “strain glass” transition in defect-containing ferroelastic Ti44Ni51Nb5 alloy.
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This study was financially supported by the National Natural Science Foundation of China (No. 51271010).
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Liao, GY., Chen, B., Meng, QK. et al. Strain glass in defect-containing ferroelastic Ti44Ni51Nb5 alloy. Rare Met. 34, 829–832 (2015). https://doi.org/10.1007/s12598-014-0229-z
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DOI: https://doi.org/10.1007/s12598-014-0229-z