Strain glass in defect-containing ferroelastic Ti44Ni51Nb5 alloy
来源期刊：Rare Metals2015年第12期
论文作者：Guang-Yue Liao Bin Chen Qing-Kun Meng Min-Juan Wang Xin-Qing Zhao
文章页码：829 - 832
摘 要：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 Tg 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.
Guang-Yue Liao，Bin Chen，Qing-Kun Meng，Min-Juan Wang，Xin-Qing Zhao
School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics
摘 要：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 Tg 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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