摘要
Ti 61.67 Zr 17.15 Ni 14.80 Cu 6.38 (atom fraction, %) metallic glass has applications in brazing. Using the hammer and anvil technique, Ti 61.67 Zr 17.15 Ni 14.80 Cu 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 Zr 2Cu, in the MSII is α Ti and in the MSIII is Ti 2Ni. This kind of alloy has lower glass forming ability, and the Ti 61.67 Zr 17.15 Ni 14.80 Cu 6.38 metallic glass has lower thermal stability.
Ti 61.67 Zr 17.15 Ni 14.80 Cu 6.38 (atom fraction, %) metallic glass has applications in brazing. Using the hammer and anvil technique, Ti 61.67 Zr 17.15 Ni 14.80 Cu 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 Zr 2Cu, in the MSII is α Ti and in the MSIII is Ti 2Ni. This kind of alloy has lower glass forming ability, and the Ti 61.67 Zr 17.15 Ni 14.80 Cu 6.38 metallic glass has lower thermal stability.
出处
《中国有色金属学会会刊：英文版》
CSCD
2004年第1期156-160,共5页
Transactions of Nonferrous Metals Society of China
基金
Project(ZSK91 D0 0 79)supportedbytheNon FerrousMetalsIndustryAssociationofChina
关键词
钛合金
非晶合金
晶化
动力学
TEM
DSC
XRD
Ti 61.67 Zr 17.15 Ni 14.80 Cu 6.38 metallic glass
crystallization behavior
glass forming ability
brazing
