Formability and Thermal Stability of Ce62Al15Fe8Co15 Bulk Metallic Glass  

作　　者：王志新 卢金斌 杨卫铁 

机构地区：[1]Department of Materials and Chemical Engineering, Zhongyuan Institute of Technology, Zhengzhou 450007

出　　处：《Chinese Physics Letters》2010年第2期206-208,共3页中国物理快报（英文版）

摘　　要：The formability and thermal stability of Ce62Al15Fe8Co15 bulk metallic glass （BMG） are studied by x-ray diffraction （XRD） and differential scanning calorimetry. The critical diameter of Ce62Al15Fe8Co15 BMG predicted by the parameter γ is about 3.1 mm, which is roughly in agreement with the XRD results. Stability of the BMG is investigated by means of continuous crystallization diagrams obtained from the extension of the Kissinger and Vogel-Fulcher-Tammann （VFT） equations comparatively. It is found that the dependence of crystallization temperature of the BMG on heating rates follows a nonlinear relationship rather than Kissinger and Lasoka＇s linear fittings. The thermal stability of the BMG is investigated by the VFT equation.The formability and thermal stability of Ce62Al15Fe8Co15 bulk metallic glass （BMG） are studied by x-ray diffraction （XRD） and differential scanning calorimetry. The critical diameter of Ce62Al15Fe8Co15 BMG predicted by the parameter γ is about 3.1 mm, which is roughly in agreement with the XRD results. Stability of the BMG is investigated by means of continuous crystallization diagrams obtained from the extension of the Kissinger and Vogel-Fulcher-Tammann （VFT） equations comparatively. It is found that the dependence of crystallization temperature of the BMG on heating rates follows a nonlinear relationship rather than Kissinger and Lasoka＇s linear fittings. The thermal stability of the BMG is investigated by the VFT equation.

关 键 词：Condensed matter: structural mechanical & thermal 

分 类 号：O484.1[理学—固体物理] TG139.8[理学—物理]