SUBSTITUTION BEHAVIOR OF MN, CR, AND ZR IN TERNARY AND QUATERNARY ALLOYS OF TIAL

Authors
REVIERE RD CHEN XF OLIVER BF BROOKS CR DUNLAP JR
Citation
Rd. Reviere et al., SUBSTITUTION BEHAVIOR OF MN, CR, AND ZR IN TERNARY AND QUATERNARY ALLOYS OF TIAL, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 172(1-2), 1993, pp. 95-100
Citations number
15
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
172
Issue
1-2
Year of publication
1993
Pages
95 - 100
Database
ISI
SICI code
0921-5093(1993)172:1-2<95:SBOMCA>2.0.ZU;2-M
Abstract
The fractional lattice site occupation of Mn, Cr and Zr in TiAl alloys was determined using the ALCHEMI (atom location by channeling enhance d microanalysis) method in transmission electron microscopy. The alloy s were (in atomic per cent) 49.5Ti-49.5Al-1Mn, 48Ti-50Al-2Mn, 48Ti-48A l-4Mn, 47.5Ti-47.5Al-5Mn, 48Ti-49Al-3Cr, and 49Ti-49Al-1Zr-ICr. The Mn substitutes randomly in the TiAl lattice and the Cr favors slightly t he Al sites. In the quaternary alloy, Cr favors slightly Al sites and Zr occupies exclusively Ti sites.