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Effect of welding heat input on microstructure and mechanical properties at coarse grain heat affected zone of ABS grade a steel

The fabrication and construction of structures used in the offshore and marine industries shall be made according to the international code and standard requirements to ensure the quality and to extend the life span. Proper material selection needs to be carried out to achieve proper function and to...

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Main Authors: Wan Muda, W.S.H., Mohd Nasir, N.S., Mamat, S., Jamian, S.
Format: Non-Indexed Article
Published: Asian Research Publishing Network 2015
Online Access:http://discol.umk.edu.my/id/eprint/8272/
http://eprints.uthm.edu.my/7499/
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spelling my.umk.eprints.82722022-05-23T10:26:15Z http://discol.umk.edu.my/id/eprint/8272/ Effect of welding heat input on microstructure and mechanical properties at coarse grain heat affected zone of ABS grade a steel Wan Muda, W.S.H. Mohd Nasir, N.S. Mamat, S. Jamian, S. The fabrication and construction of structures used in the offshore and marine industries shall be made according to the international code and standard requirements to ensure the quality and to extend the life span. Proper material selection needs to be carried out to achieve proper function and to reduce the cost. The ABS Grade A steel is one of the huge materials used in the marine industries. The study has been carried out to scrutinize the effect of welding heat input to the distribution of microstructure formation and its mechanical properties at CGHAZ of the ABS Grade A steel. Three heat input combinations designated as low heat (0.99 kJ/rnm), medium heat (1.22 Wrnrn) and high heat (2.25 kJ/mm) have been used to the weld specimen by using flux cored arc welding (FCAW) process. The microstructure formation at CGHAZ consists of grain boundary ferrite (GBF), Widmanstatten ferrite (WF) and pearlite (P). Significant grain coarsening was observed at the coarse grain heat affected zone (CGHAZ) of all the joints and it was found that the extent of grain coarsening at CGHAZ increased with the increase in the heat input. The results of the mechanical investigation indicate that the joints made using low heat input exhibit higher hardness and impact toughness value than those welded with medium and high heat input. It can be concluded that the higher the heat input, the higher the grain size of microstructure but will lead to lower hardness and impact toughness value Asian Research Publishing Network 2015 Non-Indexed Article NonPeerReviewed Wan Muda, W.S.H. and Mohd Nasir, N.S. and Mamat, S. and Jamian, S. (2015) Effect of welding heat input on microstructure and mechanical properties at coarse grain heat affected zone of ABS grade a steel. ARPN Journal of Engineering and Applied Sciences, 10. pp. 9487-9495. ISSN 1819-6608 http://eprints.uthm.edu.my/7499/
institution Universiti Malaysia Kelantan
building Perpustakaan Universiti Malaysia Kelantan
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Kelantan
content_source UMK Institutional Repository
url_provider http://umkeprints.umk.edu.my/
description The fabrication and construction of structures used in the offshore and marine industries shall be made according to the international code and standard requirements to ensure the quality and to extend the life span. Proper material selection needs to be carried out to achieve proper function and to reduce the cost. The ABS Grade A steel is one of the huge materials used in the marine industries. The study has been carried out to scrutinize the effect of welding heat input to the distribution of microstructure formation and its mechanical properties at CGHAZ of the ABS Grade A steel. Three heat input combinations designated as low heat (0.99 kJ/rnm), medium heat (1.22 Wrnrn) and high heat (2.25 kJ/mm) have been used to the weld specimen by using flux cored arc welding (FCAW) process. The microstructure formation at CGHAZ consists of grain boundary ferrite (GBF), Widmanstatten ferrite (WF) and pearlite (P). Significant grain coarsening was observed at the coarse grain heat affected zone (CGHAZ) of all the joints and it was found that the extent of grain coarsening at CGHAZ increased with the increase in the heat input. The results of the mechanical investigation indicate that the joints made using low heat input exhibit higher hardness and impact toughness value than those welded with medium and high heat input. It can be concluded that the higher the heat input, the higher the grain size of microstructure but will lead to lower hardness and impact toughness value
format Non-Indexed Article
author Wan Muda, W.S.H.
Mohd Nasir, N.S.
Mamat, S.
Jamian, S.
spellingShingle Wan Muda, W.S.H.
Mohd Nasir, N.S.
Mamat, S.
Jamian, S.
Effect of welding heat input on microstructure and mechanical properties at coarse grain heat affected zone of ABS grade a steel
author_facet Wan Muda, W.S.H.
Mohd Nasir, N.S.
Mamat, S.
Jamian, S.
author_sort Wan Muda, W.S.H.
title Effect of welding heat input on microstructure and mechanical properties at coarse grain heat affected zone of ABS grade a steel
title_short Effect of welding heat input on microstructure and mechanical properties at coarse grain heat affected zone of ABS grade a steel
title_full Effect of welding heat input on microstructure and mechanical properties at coarse grain heat affected zone of ABS grade a steel
title_fullStr Effect of welding heat input on microstructure and mechanical properties at coarse grain heat affected zone of ABS grade a steel
title_full_unstemmed Effect of welding heat input on microstructure and mechanical properties at coarse grain heat affected zone of ABS grade a steel
title_sort effect of welding heat input on microstructure and mechanical properties at coarse grain heat affected zone of abs grade a steel
publisher Asian Research Publishing Network
publishDate 2015
url http://discol.umk.edu.my/id/eprint/8272/
http://eprints.uthm.edu.my/7499/
_version_ 1763303960540610560
score 13.211869

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