Phase Equilibria in the Ni-Al-Sn Ternary System at 800 and 1000 °C

被引：0

作者：

Liu Xingjun ^{[1
,2
]}

Wu Chao ^{[1
]}

Yang Mujin ^{[1
]}

Yang Shuiyuan ^{[1
]}

Zhang Jinbin ^{[1
]}

Huang Yi-Xiong ^{[1
]}

Wang Cuiping ^{[1
]}

机构：

[1] Xiamen Univ, Fujian Prov Key Lab Mat Genome, Xiamen 361005, Fujian, Peoples R China

[2] Harbin Inst Technol, Grad Sch Shenzhen, Shenzhen 518055, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2019年 / 48卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Ni-Al-Sn ternary system; phase equilibria; solubility; electron probe microanalysis; MICROSTRUCTURE; PROPERTY;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The phase equilibria in the Ni-Al-Sn ternary system at 800 and 1000 degrees C was investigated by electron probe microanalysis and X-ray diffraction. The results show that: (1) No ternary compound is found at 800 and 1000 degrees C. (2) The Ni-Al side presents four binary compounds including NiAl, Ni3Al, Al3Ni and Al3Ni2 phases. The solubilities of Sn in the binary NiAl and Ni3Al phases are 3.1 at% and 14.7 at% at 800 degrees C, and 3.0 at% and 8.0 at% at 1000 degrees C, respectively. As for the binary Al3Ni and Al(3)Ni2 phases, the solubilities of Sn are almost negligible. (3) The Ni-Sn side displays three binary compounds including Ni3Sn(r), Ni3Sn(h) and Ni3Sn2(h). The Ni3Sn(r) phase is stable at 800 degrees C dissolving 4.2 at% Al, but it is replaced by the Ni3Sn(h) phase with a 5.5 at% Al solubility at 1000 degrees C. The solid solubility of Al in Ni3Sn2(h) is 8.4 at% and 12.1 at% at 800 and 1000 degrees C, respectively. (4) The Al-Sn side is occupied by an interconnected liquid region having only similar to 1 at% Ni solubility.

引用

页码：3155 / 3160

页数：6

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