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Effect of GMAW-CMT heat input on weld bead profile geometry for freeform fabrication of aluminium parts

Wagiman, Abdullah and Wahab, Md Saidin and Mohid, Zazuli and Mamat, Azuddin (2013) Effect of GMAW-CMT heat input on weld bead profile geometry for freeform fabrication of aluminium parts. Applied Mechanics and Materials , 465. pp. 1370-1374. ISSN 1660-9336

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Abstract

In developing a new method for weld based freeform fabrication, parameter affecting the geometry of single-pass need to be determined as it has great influence on dimensional accuracy and mechanical property of metallic part. In this paper, profile geometry and microstructure of single pass weld bead developed using Gas Metal Arc Welding Cold Metal Transfer (GMAW-CMT) was investigated. Observation on cross sectional weld bead indicates GMAW-CMT has capability to produce free spatter and crack defect weld bead. Profile geometry measurement shows weld bead develop at higher heat input has width size larger than the weld bead develop at lower heat input. Microstructure examination in the substrate reveals formation of columnar dendritic, cellular and planar structure while at buildup layer exhibit equiaxed dendritic structure

Item Type: Article
Uncontrolled Keywords: freeform fabrication; gas metal arc welding - cold metal transfer (GMAW-CMT)
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK4601-4661 Electric heating
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Manufacturing and Industrial Engineering
Depositing User: Normajihan Abd. Rahman
Date Deposited: 11 Feb 2015 06:46
Last Modified: 11 Feb 2015 06:46
URI: http://eprints.uthm.edu.my/id/eprint/6251
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