Article contents
Weldability of Ni3Al-Type Aluminide Alloys*
Published online by Cambridge University Press: 21 February 2011
Abstract
If the ductile Ni3Al-based aluminides are to achieve their full potential as engineering materials, they must demonstrate a capability for being joined by conventional welding processes. The goal of this study was to identify some of the factors controllinq weldability of the ductile aluminides. The alloys selected for this initial study were boron-doped Ni3 Al and Ni3 Al containing 10 at. % Fe. Sheet stock was used to make full penetration autoqenous welds by the electron beam and gas tungsten arc processes. The main process variables were travel speed and preheat. The aswelded coupons were examined visually and by normal metalloqraphic methods. Although sound welds were made, initial results indicated weldments of these alloys are susceptible to cracking. Weldability of the ductile Ni3Al-based aluminides was found to be affected by alloy composition and welding speed.
- Type
- Research Article
- Information
- Copyright
- Copyright © Materials Research Society 1985
Footnotes
*Research sponsored by the U.S. Department of Energy, AR&TD Fossil Energy Materials Program and the Office of Energy Utilization Research, Energy Conversion and Utilization Technologies (ECUT) Program under contract DE-ACO5-840R21400 with Martin Marietta Energy Systems, Inc.
References
REFERENCES
- 2
- Cited by