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Journal of Materials Engineering and Performance

Erschienen in:

22.01.2019

Microstructure and Mechanical Behavior of Friction Stir-Welded Sc-Modified Al-Zn-Mg Alloys Made Using Different Base Metal Tempers

verfasst von: Jiqiang Chen, Shengci Li, Hailong Cong, Zhimin Yin

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 2/2019

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Abstract

The microstructure and property of friction stir weld joints of a Sc-modified Al-Zn-Mg alloy developed using base metal in hot-rolled (HR) and T6 temper were studied and compared in this work. The results showed that the microstructure and property exhibited significant difference between the two friction stir weld joints. The weld efficiency of the FSW joint developed using base metal in HR condition is over 90%, while that of the FSW joint developed using base metal in T6 condition is only 70%. The hardness of the weld nugget of HR joint is obviously higher than that of the weld nugget of T6 joint, due to the different changes in the original precipitates during the friction stir welding process. The strengthening mechanism in different zones of the two FSW joints was discussed to examine the microstructure–properties relationship, and the main difference of the strengthening mechanism between the two FSW joints was revealed.

Vorheriger Artikel Effects of Thermal Exposure on the Microstructure and Mechanical Properties of Al-Si-Cu-Ni-Mg-Gd Alloy

Nächster Artikel Effect of Niobium on the Secondary Precipitates and Tempering Resistance of Spray-Formed M3:2 High-Speed Steel

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Titel: Microstructure and Mechanical Behavior of Friction Stir-Welded Sc-Modified Al-Zn-Mg Alloys Made Using Different Base Metal Tempers
verfasst von: Jiqiang Chen
Shengci Li
Hailong Cong
Zhimin Yin
Publikationsdatum: 22.01.2019
Verlag: Springer US
Erschienen in: Journal of Materials Engineering and Performance / Ausgabe 2/2019
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-019-3877-1

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