Home FOR AUTHORS Metallic Materials - Kovové materiály 2016 Metallic Materials Vol. 54 (2016), no. 5, pp.363-367

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Metallic Materials Vol. 54 (2016), no. 5, pp.363-367

Title: Microstructure and precipitated phase in the thermo-mechanically affected zone of friction stir welded joint for 2024 aluminium alloy
Author: LIU PENG, LIU GUOLIANG, DENG YAN, LI JIANING, JING CAINIAN, FENG KEYUN

Abstract: The 2024 aluminium alloy sheets in the T4 temper were welded successfully by the friction stir welding techniques. The AlCuMg (U-phase) of metastable precipitates was found to exist in the thermo-mechanically affected zone using TEM analysis. Moreover, the (U-phase is likely to induce the formation of two distinct microhardness minima in the stir zone of FSW weld. The AlCu3 and Cu2Mg particles were precipitated on the grain boundary of the thermo-mechanically affected zone and in the weld nugget region, respectively.

Keywords: aluminium alloys, friction stir welding, microstructure, transmission electron microscopy
Published online: 12-Oct-2016
Year: 2016, Volume: 54, Issue: 5 Page From: 363, Page To: 367
doi:10.4149/km_2016_5_363


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