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Title: High-temperature corrosion-resistant iron-aluminide (FeAl) alloys exhibiting improved weldability

Abstract

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.

Inventors:
; ;
Issue Date:
Research Org.:
Lockheed Martin Energy Syst Inc
OSTI Identifier:
288026
Patent Number(s):
5,545,373
Application Number:
PAN: 8-301,238
Assignee:
Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 13 Aug 1996
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CORROSION RESISTANT ALLOYS; CHEMICAL COMPOSITION; WELDABILITY; IRON ALLOYS; ALUMINIUM ALLOYS; TRANSITION ELEMENT ALLOYS; INTERMETALLIC COMPOUNDS; CARBON ADDITIONS; BORON ADDITIONS; CRACK PROPAGATION

Citation Formats

Maziasz, P J, Goodwin, G M, and Liu, C T. High-temperature corrosion-resistant iron-aluminide (FeAl) alloys exhibiting improved weldability. United States: N. p., 1996. Web.
Maziasz, P J, Goodwin, G M, & Liu, C T. High-temperature corrosion-resistant iron-aluminide (FeAl) alloys exhibiting improved weldability. United States.
Maziasz, P J, Goodwin, G M, and Liu, C T. Tue . "High-temperature corrosion-resistant iron-aluminide (FeAl) alloys exhibiting improved weldability". United States.
@article{osti_288026,
title = {High-temperature corrosion-resistant iron-aluminide (FeAl) alloys exhibiting improved weldability},
author = {Maziasz, P J and Goodwin, G M and Liu, C T},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {8}
}