Global to push GA events into
skip to main content

Title: Iron-aluminum alloys having high room-temperature and method for making same

A wrought and annealed iron-aluminum alloy is described consisting essentially of 8 to 9.5% aluminum, an effective amount of chromium sufficient to promote resistance to aqueous corrosion of the alloy, and an alloying constituent selected from the group of elements consisting of an effective amount of molybdenum sufficient to promote solution hardening of the alloy and resistance of the alloy to pitting when exposed to solutions containing chloride, up to about 0.05% carbon with up to about 0.5% of a carbide former which combines with the carbon to form carbides for controlling grain growth at elevated temperatures, and mixtures thereof, and the balance iron, wherein said alloy has a single disordered [alpha] phase crystal structure, is substantially non-susceptible to hydrogen embrittlement, and has a room-temperature ductility of greater than 20%.
Inventors:
;
Issue Date:
OSTI Identifier:
6270350
Assignee:
Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States) IMS; EDB-93-120702
Patent Number(s):
US 5238645; A
Application Number:
PPN: US 7-904802
Contract Number:
AC05-84OR21400
Resource Relation:
Patent File Date: 26 Jun 1992
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM ALLOYS; CORROSION RESISTANCE; FABRICATION; MECHANICAL PROPERTIES; IRON BASE ALLOYS; ANNEALING; CARBON ADDITIONS; CHEMICAL COMPOSITION; CHROMIUM ADDITIONS; CRYSTAL STRUCTURE; DUCTILITY; HYDROGEN EMBRITTLEMENT; MOLYBDENUM ADDITIONS; ALLOYS; CHROMIUM ALLOYS; EMBRITTLEMENT; HEAT TREATMENTS; IRON ALLOYS; MOLYBDENUM ALLOYS; TENSILE PROPERTIES; 360101* - Metals & Alloys- Preparation & Fabrication; 360103 - Metals & Alloys- Mechanical Properties; 360105 - Metals & Alloys- Corrosion & Erosion