FSW characterization of 6082 aluminium alloys sheets

• Autorzy: Mroczka K. , Pietras A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The purpose of the investigations was to elaborate a set of FSW parameters for connecting 6082 aluminium alloy sheets allowing to produce welds of highest strength. Design/methodology/approach: The FSW was tried at different speeds and at additional cooling. The welds microstructure was studied using optical and scanning electron microscopes. The mechanical properties of produced connections are discussed regarding their tensile test and microhardness measurements. Findings: The FSW welds, aside some zigzag lines connected probably with the incorporation of the surface oxides, were found to be devoid of any macro defects. The weld microstructure showed strong grain refining with the smallest of ~14 μm located in their centre. The highest ultimate tensile strength of such connections of ~230 MPa was obtained for experiments performed at a linear velocity of 710 rpm, rate of rotation 560 mm/min and applied intensive cooling of the joined plates. The welds showed lowest hardness in the centre rising by ~20% at its sides. The friction stir welding connections retain plastic properties of 6082 aluminium alloy presenting ductile fracture. Research limitations/implications: In the further studies bending tests and transmission electron microscopy investigations are planned. Additionally, the stability of microstructure of the welds at higher temperature will be analysed. Practical implications: The elaborated parameters for FSW of 6082 welding can be applied as starting data for industry FSW tests for such alloy. Originality/value: The results of present experiments are adding new information on FSW of the aluminium alloys, especially 6082 type. The applied welding parameters provide good quality of welds.

Słowa kluczowe

EN

friction stir welding; 6082 aluminium alloy; hardness; microstructure

PL

zgrzewanie tarciowe z mieszaniem; Friction Stir Welding; stop aluminium; twardość; mikrostruktura

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2009
• Tom: Vol. 40, nr 2
• Strony: 104--109
• Opis fizyczny: Bibliogr. 30 poz.

Twórcy

autor

Mroczka K.

autor

Pietras A.

• Institute of Technology, Pedagogical University of Cracow, ul. Podchorążych 2, 30-084 Kraków, Poland,

Bibliografia

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