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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my.iium.irep.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 |
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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/63770/1/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 http://irep.iium.edu.my/63770/ http://iopscience.iop.org/article/10.1088/1757-899X/290/1/012041/pdf |
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