Journal
INTERMETALLICS
Volume 33, Issue -, Pages 73-80Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.intermet.2012.09.027
Keywords
Ternary alloy systems; Phase diagrams; Phase diagram, prediction
Categories
Funding
- National Natural Science Foundation of China [50974084]
- Chinese National Key Technology RD Program [2007BAE09B03]
- Guizhou Province (Key Science and Technology Development Program in the Eleventh Five-Year Plan) [20076003]
- Aluminum Corporation of China (Science and Technology Development Fund) [2007KJA07]
- Instrumental Analysis and Research Center of Shanghai University
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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.
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