Phase selection during solidification of undercooled Ti-Fe, Ti-Fe-O and Ti-Fe-Si-O melts-influence of oxygen and silicon

被引：7
作者：
Heinen, O. [1 ]
Holland-Moritz, D. [1 ]
Herlach, D. M. [1 ]
机构：
[1] DLR, Inst Space Simulat, Cologne, Germany
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 449卷
关键词：
phase selection; undercooled melts; in situ X-ray diffraction; microstructures;
D O I：
10.1016/j.msea.2006.02.328
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The alloy system Ti-Fe(-O, -Si) shows a great variety of stable and metastable solid phases including structurally complex phases such as quasicrystals and approximant phases. In this work the change in phase selection during solidification as a function of composition on going from lthe binary Ti72.3Fe27.7 over the ternary Ti69.4Fe26.6O4.0 to the quaternary Ti65.4Fe25.0Si5.7O3.9 alloy (numbers indicate at.%) is investigated. The liquid samples are processed and analyzed in situ using a combination of the electromagnetic levitation technique and energy-dispersive diffraction of synchrotron radiation. This allows us to directly determine the crystal structures of the solid phases formed during solidification. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：662 / 665
页数：4
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