Crystallization behavior of Ti_61.67Zr_17.15Ni_14.80Cu_6.38 glass-forming alloy

来源期刊：中国有色金属学报(英文版)2004年第1期

论文作者：范金铎 高逸群 黎仕增

文章页码：156 - 160

Key words：Ti_61.67Zr_17.15Ni_14.80Cu_6.38 metallic glass; crystallization behavior; glass forming ability; brazing

Abstract: Ti_61.67Zr_17.15Ni_14.80Cu_6.38 (atom fraction, %) metallic glass has applications in brazing. Using the hammer-and-anvil technique, Ti_61.67Zr_17.15Ni_14.80Cu_6.38 metallic glass was prepared. The crystallization behavior for this metallic glass was investigated by differential scanning calorimetry(DSC), X-ray diffractometry(XRD) and transmission electron microscopy(TEM). There are three stages in DSC curves of crystallization. The reduced glass temperature T_rg is 0.42. The kinetic parameters of crystallization were calculated by a set of equations of the maximum crystallization rate. The crystalline phase formed in the MSI(Metastable stage I) is Zr₂Cu, in the MSII is α-Ti and in the MSIII is Ti₂Ni. This kind of alloy has lower glass forming ability, and the Ti_61.67Zr_17.15Ni_14.80Cu_6.38 metallic glass has lower thermal stability.