Weldability of iron aluminides
A preliminary investigation was carried out to determine the weldability of a class of advanced iron aluminides. Thin sheets of iron aluminides were gas tungsten arc (GTA) and electron beam (EB) welded at different travel speeds and power levels. The results indicate that the weldability of these alloys is very sensitive to the welding conditions and compositions, producing good welds sometimes and severely cracked welds at other times. Alloys containing TiB{sub 2} additions for improved strength and ductility cracked severely upon welding. Alloys without boron and zirconium, in particular alloy FA-129, was found to show more promise for welding than most of the other iron aluminides. 4 refs., 3 figs., 2 tabs.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- Sponsoring Organization:
- DOE/FE
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6998946
- Report Number(s):
- CONF-900546-10; ON: DE90012722
- Country of Publication:
- United States
- Language:
- English
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ALLOYS
ALUMINIUM ALLOYS
ARC WELDING
BORIDES
BORON COMPOUNDS
CRYSTAL STRUCTURE
ELECTRON BEAM WELDING
FABRICATION
INTERMETALLIC COMPOUNDS
IRON ALLOYS
JOINING
METALLURGICAL EFFECTS
MICROSTRUCTURE
TITANIUM BORIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WELDABILITY
WELDING
ZIRCONIUM ADDITIONS
ZIRCONIUM ALLOYS