An investigation of the Pt-Al-Ru diagram to facilitate alloy development

Authors
Biggs, T Hill, PJ Cornish, LA Witcomb, MJ
Citation
T. Biggs et al., An investigation of the Pt-Al-Ru diagram to facilitate alloy development, J PH EQUIL, 22(3), 2001, pp. 214-218
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHASE EQUILIBRIA
ISSN journal
10549714 → ACNP
Volume
22
Issue
3
Year of publication
2001
Pages
214 - 218
Database
ISI
SICI code
1054-9714(200106)22:3<214:AIOTPD>2.0.ZU;2-K
Abstract
The platinum-rich region of the Pt-Al-Ru system was investigated with a vie w to stabilizing the displacive (martensite-type) transformation in Pt3Al. In the alloys with low ruthenium contents, ruthenium was found to be partit ioned almost exclusively to the fee Pt phase with extremely limited solubil ity in Pt3Al. The low-temperature D0(C)' form of Pt3Al was found to co-exis t with the Pt phase. At high Ru additions (greater than 20 at.%), a two-pha se mixture of an hcp Ru solid solution and the high-temperature Ll(2) form of Pt3Al was observed. No ternary phases were observed in any of the alloys studied.