Dissimilar friction stir welding between polycarbonate and AA 7075 aluminum alloy

Moshwan, R. and Rahmat, S.M. and Yusof, F. and Hassan, M.A. and Hamdi, M. and Fadzil, M. (2015) Dissimilar friction stir welding between polycarbonate and AA 7075 aluminum alloy. International Journal of Materials Research, 106 (3). pp. 258-266. ISSN 1862-5282, DOI https://doi.org/10.3139/146.111172.

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Abstract

In this paper, the effects of process parameters, such as the tool rotational and traverse speeds, on temperature evolution and the microstructural and mechanical properties of dissimilar friction stir welding between 3 mm thick AA 7075 aluminum alloy and polycarbonate (PC) plates were investigated. The tool rotational and traverse speeds were varied from 3 000 to 3 500 rpm and 50 to 150 mm min(-1), respectively. The joint fabricated at 3 250 rpm and 100 mm min(-1) yielded a highest tensile load of 586 N. Microstructural analysis of the stir zone revealed an interlock phenomenon, the transportation of AA 7075 in polycarbonate, and the absence of ceramic-type (carbide, hydride or oxide) compounds. Microhardness (HV) measurement on the weld zone showed an uneven distribution due to the complicated microstructure of the welded joint. The maximum temperatures of 164 degrees C and 66 degrees C were obtained at 3 250 rpm and 100 mm min(-1) at a distance of 5 mm away from the welding centerline in the AA 7075 and PC side, respectively.

Item Type: Article
Funders: University of Malaya research grant PG128-2012B
Additional Information: Cd3qb Times Cited:0 Cited References Count:60
Uncontrolled Keywords: Friction stir welding, aa 7075, polycarbonate, mechanical interlocking, density polyethylene sheets, mechanical-properties, lap joints, intermetallic compounds, magnesium alloy, spot welds, parameters, steel, microstructure, titanium,
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 21 Sep 2015 00:26
Last Modified: 21 Sep 2015 00:26
URI: http://eprints.um.edu.my/id/eprint/13955

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