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Please use this identifier to cite or link to this item: http://dspace.bsu.edu.ru/handle/123456789/20264
Title: Friction-stir welding of an Al-Mg-Sc-Zr alloy in as-fabricated and work-hardened conditions
Authors: Malopheyev, S.
Kulitskiy, V.
Mironov, S.
Zhemchuzhnikova, D.
Kaibyshev, R.
Keywords: technique
metal science
aluminum alloy
friction-stir welding
thermo-mechanical processing
deformation structure
ultrafine grained microstructure
Issue Date: 2014
Citation: Friction-stir welding of an Al-Mg-Sc-Zr alloy in as-fabricated and work-hardened conditions / S. Malopheyev [и др.] // Materials Science and Engineering A . - 2014. - Vol.600.-P. 159-170.
Abstract: The effect of prior work hardening on the microstructure and mechanical properties of a friction-stir welded (FSWed) Al-5.4Mg-0.2Sc-0.1Zr alloy was investigated. The microstructure of the final stir zone was shown to be weakly dependent on the initial condition of the base material; FSW led to the formation of fully recrystallized microstructures with average grain sizes ranging from 1.2 to 1.5 μm and a moderate dislocation density of ~3.571±.51×10¹³ m-² in the stir zone. The nano-scale Al3(Sc,Zr) dispersoids coarsened from 9 to 1~5 nm but retained a coherent relationship with the matrix. In contrast, the joint efficiency of the obtained welds was very sensitive to the initial material condition. Nearly full strength joints were obtained in both annealed (O) and partially hardened and stabilized (H323) conditions
URI: http://dspace.bsu.edu.ru/handle/123456789/20264
Appears in Collections:Статьи из периодических изданий и сборников (на иностранных языках) = Articles from periodicals and collections (in foreign languages)

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