Constitution-based alloy selection for the screening of intermetallic Ti-Al-Fe alloys

Citation
A. Gorzel et al., Constitution-based alloy selection for the screening of intermetallic Ti-Al-Fe alloys, Z METALLKUN, 90(1), 1999, pp. 64-70
Citations number
36
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science",Metallurgy
Journal title
ZEITSCHRIFT FUR METALLKUNDE
ISSN journal
00443093 → ACNP
Volume
90
Issue
1
Year of publication
1999
Pages
64 - 70
Database
ISI
SICI code
0044-3093(199901)90:1<64:CASFTS>2.0.ZU;2-B
Abstract
The analysis of the isothermal sections of the Ti-Al-Fe phase diagram resul ted in the identification of several composition regions of interest for po ssible alloy developments. Seven TiAl-based intermetallic alloys and three intermetallic alloys on the basis of Fe-rich phases were selected and prepa red by induction melting. All phases in these alloys were characterised by light microscopy, X-ray diffraction and electron-probe microanalysis with r espect to composition and crystal structure. With the results the isotherma l section of the Ti-Al-Fe phase diagram at 1000 degrees C was updated. The alloys were tested mechanically in compression at various temperatures up t o 1000 degrees C and were characterised with respect to hardness, Young's m odulus, ratio of plastic and elastic work, yield stress and creep resistanc e. The mechanical properties of the studied alloys varied within wide limit s depending on the character and the distribution of the constituent phases . Alloys of interest for further investigation were identified.