Experimental investigation of phase equilibria in the Ti-Fe-Zr system

被引：18
|
作者：
Zeng, Lijun [1 ]
Xu, Guanglong [2 ,3 ]
Liu, Libin [1 ]
Bai, Weimin [1 ]
Zhang, Ligang [1 ]
机构：
[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China
[2] Nanjing Tech Univ, Tech Inst Adv Mat, Nanjing 211800, Jiangsu, Peoples R China
[3] Nanjing Tech Univ, Sch Mat Sci & Engn, Nanjing 211800, Jiangsu, Peoples R China
来源：
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY | 2018年 / 61卷
基金：
中国国家自然科学基金;
关键词：
Bio-titanium alloys; Ti-Fe-Zr; Isothermal section; Phase equilibria; Laves phase; THERMODYNAMIC ASSESSMENT; ISOTHERMAL SECTION; MECHANICAL-PROPERTIES; TERNARY-SYSTEM; MG SYSTEM; NI-ZN; DIFFUSION; TRANSFORMATION; DIAGRAMS; ALLOY;
D O I：
10.1016/j.calphad.2018.02.005
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The phase relations of the Ti-Fe-Zr system at 873 and 1173 K were experimentally investigated by using the equilibrated alloys. Four ternary phases were determined stable at 1173 K. Two of them were line compounds with fixed Fe/(Ti, Zr) ratio, while the other two showed ellipse-shaped homogeneity. There were eight three-phase equilibria and a continuous single phase field of beta(Ti, Zr) in the isothermal section at 1173 K. The solubility of Zr in Fe-2(Ti, Zr) and Ti in (Fe, Ti)(2)Zr was measured to be 25.5 at% and 6.1 at%, respectively. The remaining binary intermetallic phases hardly dissolved the third component. The phase relationships in the isothermal section at 873 K were similar to those at 1173 K over the composition range of 0-50 at% Fe. In this isothermal section, five three-phase equilibria were observed and they were all related with the newly found ternary phases. The phase relations measured in this work are of significant difference from the existing ones obtained with the diffusion couple.
引用
收藏
页码：20 / 32
页数：13
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