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Title: 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:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
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
Resource Relation:
Other Information: PBD: 13 Aug 1996
Country of Publication:
United States
Language:
English