Effects of alloying additions on the thermal stability of the lamellar structure of gamma-TiAl-based cast alloys

Authors
Qin, GW Wulff, L Oikawa, K Ikeshoji, T Sumi, S Zhao, G Jiang, M Mao, DW Ma, JL Hao, SM
Citation
Gw. Qin et al., Effects of alloying additions on the thermal stability of the lamellar structure of gamma-TiAl-based cast alloys, INTERMETALL, 9(2), 2001, pp. 173-177
Citations number
18
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
INTERMETALLICS
ISSN journal
09669795 → ACNP
Volume
9
Issue
2
Year of publication
2001
Pages
173 - 177
Database
ISI
SICI code
0966-9795(200102)9:2<173:EOAAOT>2.0.ZU;2-V
Abstract
The thermal stability of the as-cast lamellar structure of the Ti-48Al, Ti 45Al-3Ga, Ti-45Al-2Nb-2Cr, Ti-46Al and Ti-46Al-1.0Si alloys tin at.%) at 11 50 and 1000 degreesC was studied by optical microscopy. The addition of 1.0 Si has been demonstrated to have a remarkable improvement on the thermal st ability of the lamellar structure of TiAl alloy at high temperatures, but t he precise mechanism for this improvement needs to be clarified. (C) 2001 E lsevier Science Ltd. All rights reserved.