Progress on phase equilibria of the Al-Si-Zr system at 700 and 900 °C

JOURNAL OF ALLOYS AND COMPOUNDS

卷:693

Article

Liu, Ya^1,2  Tang, Maoyou¹  Wu, Changjun¹  Wang, Jianhua^1,2  Su, Xuping^1,2 

[1] Changzhou Univ, Key Lab Mat Surface Sci & Technol Jiangsu Prov, Changzhou 213164, Peoples R China

[2] Changzhou Univ, Jiangsu Collaborat Innovat Ctr Photovolta Sci & E, Changzhou 213164, Peoples R China

关键词: Ternary alloy system;    Phase equilibria;    Intermetallics;    Microstructure;   

DOI  :  10.1016/j.jallcom.2016.09.142

来源: Elsevier

【 摘 要 】

Phase equilibria of the Al-Si-Zr system were investigated using equilibrated alloys. All alloys were studied by X-ray powder diffraction, scanning electron microscopy and energy dispersive spectroscopy. The ternary phase tau(1) was found at 700 and 900 degrees C, while the tau(2) phase was only identified at 900 degrees C. 12 three-phase regions were experimentally determined in isothermal sections of the Al-Si-Zr system at both 700 and 900 degrees C. The solubility of Si in the intermediate and solution phases (i. e. Al3Zr, Al2Zr, Al3Zr2, AlZr3, alpha-Al and (Zr)) at the Al-Zr side is limited, whereas the solubility of Al in the SieZr intermetallic (except the Si2Zr3 phase) is reverse. In addition, Al in the aSiZr phase at 900 degrees C decreased to 0.5 at.% from 10.3 at.% at 700 degrees C. (C) 2016 Elsevier B.V. All rights reserved.

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