Effect of Fiber Laser Parameters on Laser Welded AZ31B Magnesium Alloys

Recently, the usage of Magnesium (Mg) alloys has been hugely applied in the industrial application such as in automotive, marine, and electronic due to its advantages of recyclability and lightweight. This alloys required low heat input to be weld since it is easily evaporated due to the Magnesium O...

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Main Authors:	Naqiuddin, Mat Salleh, M., Ishak, Fadhlur Rahman, Mohd Romlay
Format:	Conference or Workshop Item
Language:	English
Published:	EDP Sciences 2017
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/17589/ http://umpir.ump.edu.my/id/eprint/17589/ http://umpir.ump.edu.my/id/eprint/17589/ http://umpir.ump.edu.my/id/eprint/17589/1/Matec_Fiberlaser%20on%20AZ31B.pdf

id	oai:umpir.ump.edu.my:17589
recordtype	eprints
spelling	oai:umpir.ump.edu.my:175892017-11-08T06:02:11Z http://umpir.ump.edu.my/id/eprint/17589/ Effect of Fiber Laser Parameters on Laser Welded AZ31B Magnesium Alloys Naqiuddin, Mat Salleh M., Ishak Fadhlur Rahman, Mohd Romlay TJ Mechanical engineering and machinery Recently, the usage of Magnesium (Mg) alloys has been hugely applied in the industrial application such as in automotive, marine, and electronic due to its advantages of recyclability and lightweight. This alloys required low heat input to be weld since it is easily evaporated due to the Magnesium Oxide (MgO) at the surface and it also possesses lower melting point compared to steel. Laser welding is more convenient to weld Mg alloys due to its high power and lower heat input. AZ31B was selected since it has strong mechanical properties among others Mg alloys due to the major alloying elements; Aluminium (Al) and Zinc (Zn). Low power fiber laser machine with wavelength of 900 nm was used in this experiment. The intention of this work was to investigate the effect of low power fiber laser parameters and effect of shielding gas on weld penetration and microstructure. Another aim in this work was to produce the joint for this thin sheets metal. Penetration depth and microstructure evaluation were emphasized in the analysis section. Bead-on-Plate (BOP) and laser lap welding was conducted on AZ31B with thicknesses of 1.0mm and 0.6 mm for feasibility study using pulsed wave (PW) mode. Defocusing features was used in order to find better focal position, which has less occurrence of evaporation (underfill). The effect of different angle of irradiation was also investigated. Two types of shielding gases, Argon (Ar) and Nitrogen (N2) were used in order to study the effect of shielding gas. Lastly, the effect of pulsed energy on penetration types and depth of BOP welded samples was investigated. Focus point was found at focal length of 156 mm with 393.75 µm. For BOP experiment, higher pulsed energy used contributes to melt through defect. Meanwhile, Ns shielding gas proved to be better shielding gas in laser welding the AZ31B. Higher angle of irradiation could reduce the underfill defect. Fillet Lap joint of similar metal was successfully done where 2.0 J of pulsed energy reveals better weld joint compared to 2.4 J. EDP Sciences 2017 Conference or Workshop Item PeerReviewed application/pdf en cc_by http://umpir.ump.edu.my/id/eprint/17589/1/Matec_Fiberlaser%20on%20AZ31B.pdf Naqiuddin, Mat Salleh and M., Ishak and Fadhlur Rahman, Mohd Romlay (2017) Effect of Fiber Laser Parameters on Laser Welded AZ31B Magnesium Alloys. In: MATEC Web of Conferences: The 2nd International Conference on Automotive Innovation and Green Vehicle (AiGEV 2016), 2-3 August 2016 , Malaysia Automotive Institute, Cyberjaya, Selangor. pp. 1-12., 90 (01032). ISSN 2261-236X https://doi.org/10.1051/matecconf/20179001032 DOI: 10.1051/matecconf/20179001032
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Naqiuddin, Mat Salleh M., Ishak Fadhlur Rahman, Mohd Romlay Effect of Fiber Laser Parameters on Laser Welded AZ31B Magnesium Alloys
description	Recently, the usage of Magnesium (Mg) alloys has been hugely applied in the industrial application such as in automotive, marine, and electronic due to its advantages of recyclability and lightweight. This alloys required low heat input to be weld since it is easily evaporated due to the Magnesium Oxide (MgO) at the surface and it also possesses lower melting point compared to steel. Laser welding is more convenient to weld Mg alloys due to its high power and lower heat input. AZ31B was selected since it has strong mechanical properties among others Mg alloys due to the major alloying elements; Aluminium (Al) and Zinc (Zn). Low power fiber laser machine with wavelength of 900 nm was used in this experiment. The intention of this work was to investigate the effect of low power fiber laser parameters and effect of shielding gas on weld penetration and microstructure. Another aim in this work was to produce the joint for this thin sheets metal. Penetration depth and microstructure evaluation were emphasized in the analysis section. Bead-on-Plate (BOP) and laser lap welding was conducted on AZ31B with thicknesses of 1.0mm and 0.6 mm for feasibility study using pulsed wave (PW) mode. Defocusing features was used in order to find better focal position, which has less occurrence of evaporation (underfill). The effect of different angle of irradiation was also investigated. Two types of shielding gases, Argon (Ar) and Nitrogen (N2) were used in order to study the effect of shielding gas. Lastly, the effect of pulsed energy on penetration types and depth of BOP welded samples was investigated. Focus point was found at focal length of 156 mm with 393.75 µm. For BOP experiment, higher pulsed energy used contributes to melt through defect. Meanwhile, Ns shielding gas proved to be better shielding gas in laser welding the AZ31B. Higher angle of irradiation could reduce the underfill defect. Fillet Lap joint of similar metal was successfully done where 2.0 J of pulsed energy reveals better weld joint compared to 2.4 J.
format	Conference or Workshop Item
author	Naqiuddin, Mat Salleh M., Ishak Fadhlur Rahman, Mohd Romlay
author_facet	Naqiuddin, Mat Salleh M., Ishak Fadhlur Rahman, Mohd Romlay
author_sort	Naqiuddin, Mat Salleh
title	Effect of Fiber Laser Parameters on Laser Welded AZ31B Magnesium Alloys
title_short	Effect of Fiber Laser Parameters on Laser Welded AZ31B Magnesium Alloys
title_full	Effect of Fiber Laser Parameters on Laser Welded AZ31B Magnesium Alloys
title_fullStr	Effect of Fiber Laser Parameters on Laser Welded AZ31B Magnesium Alloys
title_full_unstemmed	Effect of Fiber Laser Parameters on Laser Welded AZ31B Magnesium Alloys
title_sort	effect of fiber laser parameters on laser welded az31b magnesium alloys
publisher	EDP Sciences
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/17589/ http://umpir.ump.edu.my/id/eprint/17589/ http://umpir.ump.edu.my/id/eprint/17589/ http://umpir.ump.edu.my/id/eprint/17589/1/Matec_Fiberlaser%20on%20AZ31B.pdf
first_indexed	2018-09-07T02:19:46Z
last_indexed	2018-09-07T02:19:46Z
_version_	1610913453844725760

Effect of Fiber Laser Parameters on Laser Welded AZ31B Magnesium Alloys

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