Mitrofanov Y P, Wang D P, Makarov A S, Wang W H, Khonik V A
Department of General Physics, State Pedagogical University, Lenin St. 86, Voronezh, 394043 Russia.
Institute of Physics, Chinese Academy of Sciences, Beijing 100190, PR China.
Sci Rep. 2016 Mar 15;6:23026. doi: 10.1038/srep23026.
It is shown that all heat effects taking place upon annealing of a metallic glass within the glassy and supercooled liquid states, i.e. heat release below the glass transition temperature and heat absorption above it, as well as crystallization-induced heat release, are related to the macroscopic shear elasticity. The underlying physical reason can be understood as relaxation in the system of interstitialcy-type "defects" (elastic dipoles) frozen-in from the melt upon glass production.
结果表明，金属玻璃在玻璃态和过冷液态退火时发生的所有热效应，即在玻璃化转变温度以下的热释放、在其以上的热吸收以及结晶诱导的热释放，都与宏观剪切弹性有关。其潜在的物理原因可以理解为，在玻璃生产过程中从熔体中冻结的间隙型“缺陷”（弹性偶极子）系统中的弛豫。
