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Correlation between microstructure and microhardness in a friction stir welded 2024 aluminium alloy

Abstract : A 2024-T351 aluminium alloy has been friction stir welded and the microstructures investigated. An inner HAZ hardness minimum was a result of an overaged S phase, whereas an outer minimum was believed to be due to precipitate dissolution. An interjacent HAZ maximum was attributable to the presence of very fine S phase precipitates. The nugget zone contained ~4 μm grains and complex dislocation structures.
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https://hal-emse.ccsd.cnrs.fr/emse-00505834
Contributor : Pierre Charles Pinoli <>
Submitted on : Monday, July 26, 2010 - 1:00:47 PM
Last modification on : Wednesday, June 24, 2020 - 4:18:17 PM

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Matthew Jones, Philippe Heurtier, Christophe Desrayaud, Frank Montheillet, Delphine Alléhaux, et al.. Correlation between microstructure and microhardness in a friction stir welded 2024 aluminium alloy. Scripta Materialia, Elsevier, 2005, 52 (8), pp.693-697. ⟨10.1016/j.scriptamat.2004.12.027⟩. ⟨emse-00505834⟩

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