Effect of GMAW-CMT Heat Input on Weld Bead Profile Geometry for Freeform Fabrication of Aluminium Parts

Wagiman, Abdullah and Wahab, Mohd Saidin and Mohid, Zazuli and Mamat, Azuddin (2014) 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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Official URL: http://www.scientific.net/AMM.465-466.1370

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 > TA Engineering (General). Civil engineering (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 09 Jan 2015 16:02
Last Modified: 25 Oct 2018 07:21
URI: http://eprints.um.edu.my/id/eprint/11800

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