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Effects of Heat Input on Mechanical Properties of Metal Inert Gas Welded 1.6mm Thick Galvanized Steel Sheet

M., Ishak and M. I., Rafiquel and M. M., Rahman (2012) Effects of Heat Input on Mechanical Properties of Metal Inert Gas Welded 1.6mm Thick Galvanized Steel Sheet. IOP Conference Series: Materials Science and Engineering, 36 (012011). pp. 1-8. ISSN 1757-8981 (Print), 1757-899X (Online)

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Abstract

It is usually a lot easier and less expensive to galvanize steel before it is welded into useful products. Galvanizing afterwards is almost impossible. In this research work, Galvanized Steel was welded by using the ER 308L stainless steel filler material. This work was done to find out an alternative way of welding and investigate the effects of heat input on the mechanical properties of butt welded joints of Galvanized Steel. A 13.7 kW maximum capacity MIG welding machine was used to join 1.6 mm thick sheet of galvanized steel with V groove and no gap between mm. Heat inputs was gradually increased from 21.06 to 25.07 joules/mm in this study. The result shows almost macro defects free welding and with increasing heat input the ultimate tensile strength and welding efficiency decrease. The Vickers hardness also decreases at HAZ with increasing heat input and for each individual specimen; hardness was lowest in heat affected zone (HAZ), intermediate in base metal and maximum in welded zone. The fracture for all specimens was in the heat affected zone while testing in the universal testing machine.

Item Type: Article
Additional Information: 1st International Conference on Mechanical Engineering Research 2011 (ICMER2011) Please click to official URL Prof. Dr. Md Mustafizur Rahman (M. M. Rahman) Dr. Mahadzir Ishak@Muhammad (M. Ishak)
Uncontrolled Keywords: Structural; Mechanical; Thermal; Chemical physics; Physical chemistry
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: Noorul Farina Arifin
Date Deposited: 15 Aug 2013 07:26
Last Modified: 25 Jan 2018 03:17
URI: http://umpir.ump.edu.my/id/eprint/3864
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