Isothermal Sections of Al-Ni-Zr Ternary System at 850 and 1050 A°C

被引：10

作者：

Chen, Q. ^{[1
]}

Huang, L. H. ^{[1
]}

Liu, H. S. ^{[1
]}

Zheng, F. ^{[1
]}

Jin, Z. P. ^{[1
]}

机构：

[1] Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

来源：

JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION | 2013年 / 34卷 / 05期

关键词：

Al-Ni-Zr ternary system; isothermal section; Ni7Zr2; phase diagram; THERMODYNAMIC REASSESSMENT; PHASE-EQUILIBRIA; BINARY; LIQUID; ALLOY; NB;

D O I：

10.1007/s11669-013-0248-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Phase relations of Al-Ni-Zr ternary system were investigated with more than 60 ternary alloy compositions combining with x-ray diffraction, scanning electron microscopy equipped with energy dispersive spectroscopy and electron probe microanalysis. The isothermal section at 850 A degrees C for x(Al) < 75 at.% has been constructed. The existence of five 2-phase regions and twenty-six 3-phase regions has been confirmed. In contrast to early reported in literature, two 3-phase equilibria: gamma-(Ni) + Ni5Zr + gamma'-AlNi3 and Ni5Zr + Ni7Zr2 + gamma' were determined. And a large solubility of Al in Ni7Zr2 about 11.07 at.% was detected. Besides, the 1050 A degrees C isothermal section was determined at the Ni-rich corner, where an extended homogeneity of Ni7Zr2 was observed. Differences of the equilibria in the Ni-rich corner obtained in the present work and appeared in literatures were further analyzed and discussed.

引用

页码：390 / 402

页数：13

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