Creep behaviors of ASTM A36 welded joints

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Published: Jun 15, 2021
Keywords:
ASTM A36 Creep Hot tensile test Weld

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Pavaret Preedawiphat
Department of Mechanical Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen 40002, Thailand
Numpon Mahayotsanun
Department of Mechanical Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen 40002, Thailand
Keerati Sa-ngoen
LPN Metallurgical Research Center (LPNMRC), Samutprakarn 10290, Thailand
Mai Noipitak
Materials and Nondestructive Testing Laboratory, Ratchaburi Learning Park, Office of the President, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
Pongsak Tuengsook
Department of Production Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
Sedthawatt Sucharitpwatskul
National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand
Kuniaki Dohda
Department of Mechanical Engineering, Northwestern University, Evanston, Illinois, 60208, USA

Abstract

This research work aimed to observe the creep behaviors of the ASTM A36 welded joints. The microstructure and hardness of the base zone (BZ), heat affected zone (HAZ), and weld fusion zone (WFZ) were measured. Afterward, the residual stresses on the welded plate were observed to determine any lead to fatigue failure. The hot tensile tests were then performed to investigate the welded specimens' creep behaviors at varied strain rates and temperatures. The power-law model was applied to describe the creep behaviors at each testing condition. Finally, the scanning electron microscopic (SEM) images of the tested specimens were observed to identify breakage causes. The creep results showed that the weakest locations were found in the base (A36) zones. The areas prone to ductile fracture was the base zones close to HAZ.

Article Details

How to Cite
Preedawiphat, P., Mahayotsanun, N., Sa-ngoen, K., Noipitak, M., Tuengsook, P., Sucharitpwatskul, S., & Dohda, K. (2021). Creep behaviors of ASTM A36 welded joints. Engineering and Applied Science Research, 48(4), 446–455. Retrieved from https://ph01.tci-thaijo.org/index.php/easr/article/view/242695
Issue
Vol. 48 No. 4 (2021)
Section
ORIGINAL RESEARCH

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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