Characterization of 6061-T6 aluminum alloy to AISI 1018 steel interfaces during joining and thermo-mechanical conditioning

Friction welds between 6061-T6 aluminum alloy and AISI 1018 steel have been examined in the as process condition and following thermo-mechanical treatment. Joints were characterized by microhardness mapping, focused ion beam with ultra high resolution scanning electron microscopy and transmission el...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2010-03, Vol.527 (7), p.1704-1708
Main Authors: Taban, Emel, Gould, Jerry E., Lippold, John C.
Format: Article
Language:English
Subjects:
Aluminum alloys
Applied sciences
Electron microscopy
Exact sciences and technology
Intermetallic compounds
Joining, thermal cutting: metallurgical aspects
Metals. Metallurgy
Steels
Welding
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Summary:Friction welds between 6061-T6 aluminum alloy and AISI 1018 steel have been examined in the as process condition and following thermo-mechanical treatment. Joints were characterized by microhardness mapping, focused ion beam with ultra high resolution scanning electron microscopy and transmission electron microscopy with energy dispersive spectrum. Intermetallic layer thicknesses at the interfaces ranged from 250 to 400 nm. These intermetallics appear related to the FeAl and Fe 2Al 5 phases for as-welded condition and FeAl, Fe 2Al 5, FeAl 3 and FeAl 6 phases following thermo-mechanical condition.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2009.10.059