BORON SOLUBILITY AND BORIDE COMPOSITIONS IN ALPHA(2)+GAMMA TITANIUM ALUMINIDES

Authors
LARSON DJ LIU CT MILLER MK
Citation
Dj. Larson et al., BORON SOLUBILITY AND BORIDE COMPOSITIONS IN ALPHA(2)+GAMMA TITANIUM ALUMINIDES, Intermetallics, 5(6), 1997, pp. 411-414
Citations number
27
Categorie Soggetti
Metallurgy & Metallurigical Engineering","Chemistry Physical","Material Science
Journal title
Intermetallics → ACNP
ISSN journal
09669795
Volume
5
Issue
6
Year of publication
1997
Pages
411 - 414
Database
ISI
SICI code
0966-9795(1997)5:6<411:BSABCI>2.0.ZU;2-7
Abstract
Atom-probe field ion microscopy investigations of (alpha(2) + gamma) T i-47%Al-2%Cr-2%Nb (at%) doped with 0.15% B and 0.2% W, indicate that t he boron is mainly concentrated in boride precipitates. Several boride s including TiB2, TiB and a Cr-enriched M2B phase were detected. Initi al results give no appreciable evidence of boron segregation to gamma/ gamma or alpha(2)/gamma interfaces. The solubility of boron in the gam ma and alpha(2) matrix phases was found to be 0.011 +/- 0.006 at% B an d <0.003 at% B, respectively. Published by Elsevier Science Limited.