Microstructure, mechanical, and failure characteristics of laser-microwelded AZ31B Mg alloy optimized by response surface methodology

Thin sheets of magnesium alloys are finding promising applications in automotive, biomedical, and electronics industries, where joining of components requires fusion microwelding. In the present research, laser microbeam welding (LBW) of 0.6-mm-thick AZ31B Mg alloy was investigated based on response...

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Main Authors:	M. N. M., Salleh, M., Ishak, M. M., Quazi, Aiman, Mohd Halil
Format:	Article
Language:	English
Published:	Springer-Verlag 2018
Subjects:	T Technology (General) TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/23297/ http://umpir.ump.edu.my/id/eprint/23297/ http://umpir.ump.edu.my/id/eprint/23297/ http://umpir.ump.edu.my/id/eprint/23297/1/Microstructure%2C%20mechanical%2C%20and%20failure%20characteristics1.pdf

id	ump-23297
recordtype	eprints
spelling	ump-232972019-01-11T02:07:38Z http://umpir.ump.edu.my/id/eprint/23297/ Microstructure, mechanical, and failure characteristics of laser-microwelded AZ31B Mg alloy optimized by response surface methodology M. N. M., Salleh M., Ishak M. M., Quazi Aiman, Mohd Halil T Technology (General) TJ Mechanical engineering and machinery Thin sheets of magnesium alloys are finding promising applications in automotive, biomedical, and electronics industries, where joining of components requires fusion microwelding. In the present research, laser microbeam welding (LBW) of 0.6-mm-thick AZ31B Mg alloy was investigated based on response surface methodology to optimize tensile-shear strength. The effect of pulse energy (EP), welding speed (WS), and angle of irradiation (AOI) on geometrical and mechanical properties of the welds was studied. Shear-tensile tests of the samples under optimized welding parameters produced defect-free joint with the highest strength of 80.5 MPa corresponding to a fracture load of 800 N. Finer grains that were 12 times smaller than the as-received alloy were witnessed in the fusion zone with an average grain size of 1.5 μm. The enhancement in hardness of 77 HV was attributed to the microstructural refinement in the fusion zone consisting of elongated grain structure in the presence of α-Mg precipitates. Failure characteristics of joints revealed evaporative loss of alloying elements that resulted in the transgranular brittle fracture in the heat-affected zone. Springer-Verlag 2018 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/23297/1/Microstructure%2C%20mechanical%2C%20and%20failure%20characteristics1.pdf M. N. M., Salleh and M., Ishak and M. M., Quazi and Aiman, Mohd Halil (2018) Microstructure, mechanical, and failure characteristics of laser-microwelded AZ31B Mg alloy optimized by response surface methodology. The International Journal of Advanced Manufacturing Technology, 9 (1-4). pp. 985-1001. ISSN 0268-3768 (Print), 1433-3015 (Online) https://link.springer.com/article/10.1007/s00170-018-2529-1 https://doi.org/10.1007/s00170-018-2529-1
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	T Technology (General) TJ Mechanical engineering and machinery
spellingShingle	T Technology (General) TJ Mechanical engineering and machinery M. N. M., Salleh M., Ishak M. M., Quazi Aiman, Mohd Halil Microstructure, mechanical, and failure characteristics of laser-microwelded AZ31B Mg alloy optimized by response surface methodology
description	Thin sheets of magnesium alloys are finding promising applications in automotive, biomedical, and electronics industries, where joining of components requires fusion microwelding. In the present research, laser microbeam welding (LBW) of 0.6-mm-thick AZ31B Mg alloy was investigated based on response surface methodology to optimize tensile-shear strength. The effect of pulse energy (EP), welding speed (WS), and angle of irradiation (AOI) on geometrical and mechanical properties of the welds was studied. Shear-tensile tests of the samples under optimized welding parameters produced defect-free joint with the highest strength of 80.5 MPa corresponding to a fracture load of 800 N. Finer grains that were 12 times smaller than the as-received alloy were witnessed in the fusion zone with an average grain size of 1.5 μm. The enhancement in hardness of 77 HV was attributed to the microstructural refinement in the fusion zone consisting of elongated grain structure in the presence of α-Mg precipitates. Failure characteristics of joints revealed evaporative loss of alloying elements that resulted in the transgranular brittle fracture in the heat-affected zone.
format	Article
author	M. N. M., Salleh M., Ishak M. M., Quazi Aiman, Mohd Halil
author_facet	M. N. M., Salleh M., Ishak M. M., Quazi Aiman, Mohd Halil
author_sort	M. N. M., Salleh
title	Microstructure, mechanical, and failure characteristics of laser-microwelded AZ31B Mg alloy optimized by response surface methodology
title_short	Microstructure, mechanical, and failure characteristics of laser-microwelded AZ31B Mg alloy optimized by response surface methodology
title_full	Microstructure, mechanical, and failure characteristics of laser-microwelded AZ31B Mg alloy optimized by response surface methodology
title_fullStr	Microstructure, mechanical, and failure characteristics of laser-microwelded AZ31B Mg alloy optimized by response surface methodology
title_full_unstemmed	Microstructure, mechanical, and failure characteristics of laser-microwelded AZ31B Mg alloy optimized by response surface methodology
title_sort	microstructure, mechanical, and failure characteristics of laser-microwelded az31b mg alloy optimized by response surface methodology
publisher	Springer-Verlag
publishDate	2018
url	http://umpir.ump.edu.my/id/eprint/23297/ http://umpir.ump.edu.my/id/eprint/23297/ http://umpir.ump.edu.my/id/eprint/23297/ http://umpir.ump.edu.my/id/eprint/23297/1/Microstructure%2C%20mechanical%2C%20and%20failure%20characteristics1.pdf
first_indexed	2023-09-18T22:34:49Z
last_indexed	2023-09-18T22:34:49Z
_version_	1777416525139935232

Microstructure, mechanical, and failure characteristics of laser-microwelded AZ31B Mg alloy optimized by response surface methodology

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