STABILITY OF TIAL IN THE TI-AL-CR SYSTEM

Authors
JEWETT TJ AHRENS B DAHMS M
Citation
Tj. Jewett et al., STABILITY OF TIAL IN THE TI-AL-CR SYSTEM, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 225(1-2), 1997, pp. 29-37
Citations number
26
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
225
Issue
1-2
Year of publication
1997
Pages
29 - 37
Database
ISI
SICI code
0921-5093(1997)225:1-2<29:SOTITT>2.0.ZU;2-P
Abstract
The solubility of Cr in TiAl, at 1000 and 80O degrees C, in the Ti-Al- Cr ternary system is examined. Based on the results, partial isotherma l sections, showing the relationship of TiAl with the neighboring phas es have been constructed. The solubility of TiAl increases into the te rnary with increasing Al content at 1000 degrees C, to a maximum of ab out 8 at.% Cr. At 800 degrees C, the maximum solubility of TiAl is abo ut 4.5 at.% Cr. The separation of the beta/B2 phase field into the bet a(Cr) and B2 phase regions is examined. The phase separation temperatu re was found to be about 1100 degrees C. Finally, the data from the cu rrent study is combined with information from the literature to constr uct isothermal sections of the Ti-Al-Cr system at 1000 and 800 degrees C. (C) 1997 Elsevier Science S.A.