An investigation of TIG welding parameters on microhardness and microstructure of heat affected zone of HSLA steel

Nowadays a wide variety of metal joining methods are used in fabrication industries. In this study, the effect of various welding parameters of the TIG welding process on microhardness, depth, and microstructure of the heat-affected zone (HAZ) of L450 HSLA steel and optimizing these process param...

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Main Authors:	Musa, Mukhtaruddin Iqbal A., Maleque, Md. Abdul, Ali, Mohammad Yeakub
Format:	Conference or Workshop Item
Language:	English English English
Published:	IOP Publishing 2018
Subjects:	T11.95 Industrial directories TN600 Metallurgy TN799.5 Nonmetallic minerals TS200 Metal manufactures. Metalworking
Online Access:	http://irep.iium.edu.my/63770/ http://irep.iium.edu.my/63770/ http://irep.iium.edu.my/63770/ http://irep.iium.edu.my/63770/1/P135%202018%20IOP_MSE%20Musa.pdf http://irep.iium.edu.my/63770/7/63770-%20An%20Investigation%20of%20TIG%20welding%20parameters%20on%20microhardness%20and%20microstructure%20SCOPUS.pdf http://irep.iium.edu.my/63770/13/63770_An%20investigation%20of%20TIG%20welding%20parameters%20on%20microhardness%20and%20microstructure_WoS.pdf

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spelling	iium-637702018-07-31T08:14:23Z http://irep.iium.edu.my/63770/ An investigation of TIG welding parameters on microhardness and microstructure of heat affected zone of HSLA steel Musa, Mukhtaruddin Iqbal A. Maleque, Md. Abdul Ali, Mohammad Yeakub T11.95 Industrial directories TN600 Metallurgy TN799.5 Nonmetallic minerals TS200 Metal manufactures. Metalworking Nowadays a wide variety of metal joining methods are used in fabrication industries. In this study, the effect of various welding parameters of the TIG welding process on microhardness, depth, and microstructure of the heat-affected zone (HAZ) of L450 HSLA steel and optimizing these process parameters following Taguchi experimental design was investigated. The microhardness tended to increase significantly with the increase of welding speed from 1.0 to 2.5 mm/s whereas the width of HAZ decreased. The current and arc voltage was found to be less significant in relative comparison. Microstructures of the welded samples were also studied to analyze the changes in the microstructure of the material in terms of ferrite, pearlite, bainite, and martensite formations. Welding speed was found to be the most significant factors leading to changes in microhardness and metallurgical properties. The increase of welding heat input caused an increase in width (depth) of HAZ and the growth of prior austenite grains and then enlarged the grain size of coarse grain heat affected zone (CGHAZ). However, the amount of martensite in the HAZ decreased accompanied by an opposite change of paint. It was observed that the hardness properties and the microstructural feature of HAZ area was strongly affected by the welding parameters. IOP Publishing 2018-01 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/63770/1/P135%202018%20IOP_MSE%20Musa.pdf application/pdf en http://irep.iium.edu.my/63770/7/63770-%20An%20Investigation%20of%20TIG%20welding%20parameters%20on%20microhardness%20and%20microstructure%20SCOPUS.pdf application/pdf en http://irep.iium.edu.my/63770/13/63770_An%20investigation%20of%20TIG%20welding%20parameters%20on%20microhardness%20and%20microstructure_WoS.pdf Musa, Mukhtaruddin Iqbal A. and Maleque, Md. Abdul and Ali, Mohammad Yeakub (2018) An investigation of TIG welding parameters on microhardness and microstructure of heat affected zone of HSLA steel. In: International Conference on Advances in Manufacturing and Materials Engineering (ICAMME 2017), 8th–9th August 2017, Kuala Lumpur, Malaysia. http://iopscience.iop.org/article/10.1088/1757-899X/290/1/012041/pdf 10.1088/1757-899X/290/1/012041
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English English
topic	T11.95 Industrial directories TN600 Metallurgy TN799.5 Nonmetallic minerals TS200 Metal manufactures. Metalworking
spellingShingle	T11.95 Industrial directories TN600 Metallurgy TN799.5 Nonmetallic minerals TS200 Metal manufactures. Metalworking Musa, Mukhtaruddin Iqbal A. Maleque, Md. Abdul Ali, Mohammad Yeakub An investigation of TIG welding parameters on microhardness and microstructure of heat affected zone of HSLA steel
description	Nowadays a wide variety of metal joining methods are used in fabrication industries. In this study, the effect of various welding parameters of the TIG welding process on microhardness, depth, and microstructure of the heat-affected zone (HAZ) of L450 HSLA steel and optimizing these process parameters following Taguchi experimental design was investigated. The microhardness tended to increase significantly with the increase of welding speed from 1.0 to 2.5 mm/s whereas the width of HAZ decreased. The current and arc voltage was found to be less significant in relative comparison. Microstructures of the welded samples were also studied to analyze the changes in the microstructure of the material in terms of ferrite, pearlite, bainite, and martensite formations. Welding speed was found to be the most significant factors leading to changes in microhardness and metallurgical properties. The increase of welding heat input caused an increase in width (depth) of HAZ and the growth of prior austenite grains and then enlarged the grain size of coarse grain heat affected zone (CGHAZ). However, the amount of martensite in the HAZ decreased accompanied by an opposite change of paint. It was observed that the hardness properties and the microstructural feature of HAZ area was strongly affected by the welding parameters.
format	Conference or Workshop Item
author	Musa, Mukhtaruddin Iqbal A. Maleque, Md. Abdul Ali, Mohammad Yeakub
author_facet	Musa, Mukhtaruddin Iqbal A. Maleque, Md. Abdul Ali, Mohammad Yeakub
author_sort	Musa, Mukhtaruddin Iqbal A.
title	An investigation of TIG welding parameters on microhardness and microstructure of heat affected zone of HSLA steel
title_short	An investigation of TIG welding parameters on microhardness and microstructure of heat affected zone of HSLA steel
title_full	An investigation of TIG welding parameters on microhardness and microstructure of heat affected zone of HSLA steel
title_fullStr	An investigation of TIG welding parameters on microhardness and microstructure of heat affected zone of HSLA steel
title_full_unstemmed	An investigation of TIG welding parameters on microhardness and microstructure of heat affected zone of HSLA steel
title_sort	investigation of tig welding parameters on microhardness and microstructure of heat affected zone of hsla steel
publisher	IOP Publishing
publishDate	2018
url	http://irep.iium.edu.my/63770/ http://irep.iium.edu.my/63770/ http://irep.iium.edu.my/63770/ http://irep.iium.edu.my/63770/1/P135%202018%20IOP_MSE%20Musa.pdf http://irep.iium.edu.my/63770/7/63770-%20An%20Investigation%20of%20TIG%20welding%20parameters%20on%20microhardness%20and%20microstructure%20SCOPUS.pdf http://irep.iium.edu.my/63770/13/63770_An%20investigation%20of%20TIG%20welding%20parameters%20on%20microhardness%20and%20microstructure_WoS.pdf
first_indexed	2023-09-18T21:30:27Z
last_indexed	2023-09-18T21:30:27Z
_version_	1777412475048689664

An investigation of TIG welding parameters on microhardness and microstructure of heat affected zone of HSLA steel

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