Honghui Xu, Yong Du, Yichun Zhou, Xuejun Zheng, Wei Xiong, Shuhong Liu, Xuping Su, Fucheng Yin
June 11, 2013
The phase equilibria at 340°C of the Al – Ni – Zn system were investigated by combining the diffusion couple technique with the equilibrated alloys method. The samples were examined by means of optical microscopy, X-ray diffraction, scanning electron microscopy, and electron probe microanalysis. Two ternary compounds ( 1 and 2 ) were found to exist at 340°C. The solubilities of Zn in AlNi, Al 3 Ni 2 and Al 3 Ni were determined to be about 20, 2 and 1 at.% Zn, respectively. The solubilities of Al in β 1 -NiZn and in were measured to be about 11.5 and 1 at.% Al, respectively. The solubilities of Zn in both AlNi 3 and Al 3 Ni 5 are below 1 at.% Zn.