In situ observations of solidification in Ti-Al-Ta alloys by synchrotron radiation

被引：16
|
作者：
Shuleshova, Olga [1 ]
Holland-Moritz, Dirk [2 ]
Voss, Andrea [1 ]
Loeser, Wolfgang [1 ]
机构：
[1] Leibniz Inst Festkorper & Werkstoffforsch IFW, D-01171 Dresden, Germany
[2] Deutsch Zentrum Luft & Raumfahrt DLR, Inst Mat Phys Weltraum, D-51170 Cologne, Germany
来源：
INTERMETALLICS | 2011年 / 19卷 / 05期
关键词：
Titanium aluminides; based on TiAl; Phase transformation; Phase diagram; prediction (including CALPHAD); Diffraction; THERMODYNAMIC REEVALUATION; NB;
D O I：
10.1016/j.intermet.2011.01.005
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：
In situ observations of phase transformations involving the melt are performed using energy-dispersive diffraction of synchrotron X-rays on electromagnetically levitated Ti-Al-Ta alloys. Determined solidification modes for various alloy compositions reveal an extension of beta solidification phase field towards the Al-rich corner. These data have been assessed in a new thermodynamic description of the ternary Ti-Al-Ta system, which provides a reliable representation of the solid-liquid phase equilibria. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：688 / 692
页数：5
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