High-Pressure Annealing Effect on Glass Transformation Temperature of Zr41Ti14CU12.5Ni10Be22.5 Bulk Metallic Glass  

作　　者：李工 董艳国 黄蕾 何国伟 刘日平 王文魁 

机构地区：[1]State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004

出　　处：《Chinese Physics Letters》2009年第8期201-204,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation under Grant No 50731005/50821001, the National Basic Research Program of China under Grant No 2006CB605201, and the Programme for Changjiang Scholars and Innovative Research Team in University （PCSIRT） under Grant No IRT0650, the Natural Science Foundation of Hebei Province under Grant No A2007000296.

摘　　要：Zr41 Ti14 Cu12.5Ni10Be22.5 bulk metallic glasses （BMG） are annealed at a temperature of 603 K under ambient and high pressures in the range of 3-6 GPa. The effect of high pressure annealing on the nanocrystallization process of compressed specimens is investigated by x-ray diffraction, differential scanning calorimetry and transmission electron microscopy. Experimental results show that the grain size of the crystalline phase decreases with the increasing pressure. For the Zr41Ti14Cu12.5Nil0Be22.5 BMG annealing at 603K in the pressure range of 0- 6 GPa, the activation energy 159.68 kJ/mol and the activation volume △V＊ =0.94 cm^3/mol are determined. The mechanism for the effects of the high pressure on the nanocrystallization process of the BMG is discussed.Zr41 Ti14 Cu12.5Ni10Be22.5 bulk metallic glasses （BMG） are annealed at a temperature of 603 K under ambient and high pressures in the range of 3-6 GPa. The effect of high pressure annealing on the nanocrystallization process of compressed specimens is investigated by x-ray diffraction, differential scanning calorimetry and transmission electron microscopy. Experimental results show that the grain size of the crystalline phase decreases with the increasing pressure. For the Zr41Ti14Cu12.5Nil0Be22.5 BMG annealing at 603K in the pressure range of 0- 6 GPa, the activation energy 159.68 kJ/mol and the activation volume △V＊ =0.94 cm^3/mol are determined. The mechanism for the effects of the high pressure on the nanocrystallization process of the BMG is discussed.

分 类 号：TG139.8[一般工业技术—材料科学与工程] TB383[金属学及工艺—合金]