The Effect of Post Welding Heat Treatment/PWHT on the Corrosion Rate of Welded AISI 1020 Steel in a Marine Environment of the Northern Area of Semarang, Jawa Tengah, Indonesia

AISI 1020 steel is widely used in construction, where its assembly requires Shielded Metal Arc Welding (SMAW). The welding process leads to a decrease in its corrosion resistance properties. To overcome this issue, the Post Weld Heat Treatment (PWHT) method has been developed to improve its corrosio...

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Bibliographic Details
Published in:International research journal of innovations in engineering and technology 2023-11, Vol.7 (11), p.581
Main Authors: Suprihanto, Agus, Dwi Basuki Wibowo
Format: Article
Language:English
Subjects:
Corrosion effects
Corrosion rate
Corrosion resistance
Corrosion resistant steels
Hardness tests
Heat treating
Homogeneity
Low carbon steels
Marine environment
Microstructure
Post-weld heat treatment
Process parameters
Residual stress
Seawater
Shielded metal arc welding
Wear resistance
Welding parameters
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Summary:AISI 1020 steel is widely used in construction, where its assembly requires Shielded Metal Arc Welding (SMAW). The welding process leads to a decrease in its corrosion resistance properties. To overcome this issue, the Post Weld Heat Treatment (PWHT) method has been developed to improve its corrosion resistance. The welding process utilizes the Shielded Metal Arc Welding (SMAW) method with process parameters such as a but joint connection type, a current strength of 60, voltage ranging from 20-26 V, and RD460 welding electrode. The conducted tests include microstructure testing, hardness testing, and wear resistance testing in seawater. Post Weld Heat Treatment (PWHT) is carried out at temperatures of 400, 500, and 600 °C, with holding times of 1, 2, and 3 hours. The test results indicate that higher temperatures and holding times result in a more homogeneous microstructure, decreased hardness, and lower corrosion rates. The reduction in corrosion rates is attributed to the increasing homogeneity of the microstructure and the decrease in residual stress.
ISSN:2581-3048
DOI:10.47001/IRJIET/2023.711076