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Recent Developments Toward the Application of Iron Aluminides in Fossil Fuel Technologies
Author(s) -
Morris David G.,
MuñozMorris Maria A.
Publication year - 2011
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201000210
Subject(s) - materials science , ductility (earth science) , metallurgy , fossil fuel , oak ridge national laboratory , toughness , creep , high temperature corrosion , alloy , waste management , engineering , physics , nuclear physics
Iron aluminides are of interest for applications in power generation from fossil fuels because of excellent high temperature oxidation–corrosion resistance in aggressive environments and are potential replacements for high temperature steels. The Fe‐base composition ensures relative cheapness, while the high Al content leads to significant density reduction over commercial steels. Problems of low ductility/toughness at room temperature and poor high temperature (creep) strength, however, have prevented significant commercial use. After studies led by Oak Ridge National Laboratory (USA) from about 1980 to 2000, research has continued in Europe both as pan‐European efforts and as national efforts in countries such as the Czech Republic, France, Germany and Spain. An overview of such recent activities is presented, indicating the research strategies involved, and the progress toward making iron aluminides useful engineering materials. Recent activities have targeted microstructural refinement through novel processing to improve room temperature ductility or attempted alloying additions to improve high temperature strength. Achieving the required properties remains difficult, and has led to developments of iron aluminides as cast components and as coatings.