Multicomponent metastable phase formed by crystallization of Ti-Ni-Cu-Sn-Zr amorphous alloy

被引：32
作者：
Louzguine, DV [1 ]
Inoue, A [1 ]
机构：
[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
来源：
JOURNAL OF MATERIALS RESEARCH | 1999年 / 14卷 / 11期
关键词：
D O I：
10.1557/JMR.1999.0599
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Crystallization of the Ti45Ni20Cu25Sn5Zr5 alloy has been studied by means of scanning differential calorimetry, x-ray diffraction, and conventional and high-resolution transmission electron microscopy, The first stage at about 750-800 K is related to the primary crystallization of the Ti8Ni3Cu3SnZr metastable phase having Im3m body-centered-cubic structure with a lattice parameter of a = 0.3069 nm followed by precipitation of the secondary dotlike phase precipitates on its boundaries. The activation energy for the first exothermic reaction determined by Kissinger analysis was found to be 310 kJ/mol. CuTi, Ni2TiZr, and an unknown phase rue formed during ion-term annealing at high (more than 850 K) temperature.
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收藏
页码：4426 / 4430
页数：5
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