High-temperature corrosion-resistant iron-aluminide (FeAl) alloys exhibiting improved weldability
Patent
·
OSTI ID:288026
This invention relates to improved corrosion-resistant iron-aluminide intermetallic alloys. The alloys of this invention comprise, in atomic percent, from about 30% to about 40% aluminum alloyed with from about 0.1% to about 0.5% carbon, no more than about 0.04% boron such that the atomic weight ratio of boron to carbon in the alloy is in the range of from about 0.01:1 to about 0.08:1, from about 0.01 to about 3.5% of one or more transition metals selected from Group IVB, VB, and VIB elements and the balance iron wherein the alloy exhibits improved resistance to hot cracking during welding. 13 figs.
- Research Organization:
- Lockheed Martin Energy Syst Inc
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
- Patent Number(s):
- US 5,545,373/A/
- Application Number:
- PAN: 8-301,238
- OSTI ID:
- 288026
- Country of Publication:
- United States
- Language:
- English
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