The origin of a new phase observed during quenching of a TiAl-2Fe alloy

被引：8

作者：

Tokar, A ^{[1
]}

Berner, A ^{[1
]}

Levin, L ^{[1
]}

机构：

[1] Technion Israel Inst Technol, Dept Mat Engn, IL-32000 Haifa, Israel

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2001年 / 308卷 / 1-2期

关键词：

TiAl(gamma) base alloy; iron addition; phase identification;

D O I：

10.1016/S0921-5093(00)02038-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Microstructure formation in the Ti-49.6at.% Al-1.9at.% Fe alloy after fast and slow cooling from 1200 degreesC was examined and analyzed by X-ray diffraction, scanning and transmission electron microscopy combined with electron probe microanalysis. Formation of a previously unidentified si phase is reported and discussed. It has a tetragonal lattice with lattice parameters a = 11.5 Angstrom, c = 13.8 Angstrom. Possible orientation relationships between the tau ' (2) phase and the parent FeTi(Al) are [010](tau '2) parallel to [001](FeTi(Al)) [100](tau '2) parallel to [110](FeTi(Al)) and [001](tau '2) parallel to [(1) over bar 10](FeTi(Al).) (C) 2001 Elsevier Science B.V. Ah rights reserved.

引用

页码：13 / 18

页数：6

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