Experimental investigation and thermodynamic optimization of the Al-Zn-Ti system in the Al-rich corner

被引：15

作者：

Luo, Qun ^{[1
]}

Li, Qian ^{[1
]}

Zhang, Jie-Yu ^{[1
]}

Chen, Shuang-Lin ^{[1
,2
]}

Chou, Kuo-Chih ^{[1
]}

机构：

[1] Shanghai Univ, Shanghai Key Lab Modern Met & Mat Proc, Shanghai 200072, Peoples R China

[2] CompuTherm LLC, Madison, WI 53719 USA

来源：

INTERMETALLICS | 2013年 / 33卷

基金：

中国国家自然科学基金;

关键词：

Ternary alloy systems; Phase diagrams; Phase diagram; prediction; PHASE; SUPERPLASTICITY; NUCLEATION; TIAL3; MICROSTRUCTURE; TEMPERATURE; STABILITY; MECHANISM; BEHAVIOR; ALLOYS;

D O I：

10.1016/j.intermet.2012.09.027

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：

The phase relationships of the Al-Zn-Ti system in the Al-rich corner (up to 25 at.% Ti and 60 at.% Zn) at 500 degrees C and 400 degrees C were experimentally studied. The annealed samples were investigated by means of optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive X-ray spectrometer (EDS) and X-ray powder diffraction (XRD). The experimental results showed that the ternary phase tau -Ti25Al75-xZnx (x = 19-60) was stable in the temperature range of 400-500 degrees C. A new Ti28Al68Zn4 phase different from TiAl3 phase was in equilibrium with (Al) and tau in the Al-rich corner. Based on the isothermal experimental data at 500 degrees C and 400 degrees C, a set of self-consistent thermodynamic description of the Al Zn Ti system was obtained. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：73 / 80

页数：8

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