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High temperature strain glass transition in defect doped Ti–Pd martensitic alloys
Author(s) -
Zhou Yumei,
Xue Dezhen,
Ding Xiangdong,
Otsuka Kazuhiro,
Sun Jun,
Ren Xiaobing
Publication year - 2014
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201350360
Subject(s) - materials science , diffusionless transformation , glass transition , strain (injury) , alloy , doping , shape memory alloy , amorphous metal , hysteresis , strain rate , martensite , composite material , metallurgy , thermal expansion , transition temperature , condensed matter physics , microstructure , superconductivity , optoelectronics , medicine , physics , polymer
Strain glass alloys exhibit novel functionalities around their glass transition temperature T 0 ; but T 0 is too low for TiNi‐based strain glass alloys, restricting their potential applications. It is thus of practical importance to develop high T 0 strain glass alloys. In the present study, several ambient‐temperature T 0 strain glass alloys were developed, by selecting TiPd with high temperature martensitic transformation as the host alloy and doping different kinds of point defects to substitute Pd. By comparing TiPd‐based and TiNi‐based strain glass alloys, it is found that T 0 of strain glass alloys is controlled by the martensitic transformation temperature of its host alloys without defect doping. Finally, our results suggest that strain glass alloys are also promising damping materials for applications, as their transition damping peak is insensitive to the cooling/heating rate and is also thermal hysteresis free.