METASTABLE MICROSTRUCTURES IN RAPIDLY SOLIDIFIED NI RICH TINI ALLOYS

Authors
NAGARAJAN R RANGANATHAN S AOKI K CHATTOPADHYAY K
Citation
R. Nagarajan et al., METASTABLE MICROSTRUCTURES IN RAPIDLY SOLIDIFIED NI RICH TINI ALLOYS, Materials transactions, JIM, 38(5), 1997, pp. 406-412
Citations number
21
Categorie Soggetti
Metallurgy & Metallurigical Engineering","Material Science
Journal title
Materials transactions, JIM → ACNP
ISSN journal
09161821
Volume
38
Issue
5
Year of publication
1997
Pages
406 - 412
Database
ISI
SICI code
0916-1821(1997)38:5<406:MMIRSN>2.0.ZU;2-Y
Abstract
The metastable microstructures in two rapidly solidified Ni rich Ti-Ni alloys are studied. A first report of the presence of a cubic phase w ith three times the lattice parameter of B2-TiNi in melt spun Ti40Ni60 alloy is presented. This phase has precipitated from the massively so lidified BZ-TiNi. We also report the formation of a faulted structure (A), polytypic to TiNi3 along with TiNi3 in melt spun Ti30Ni70 alloy. It is argued that this structure is stabilised due to a specific valen ce electron by atom ratio.