EFFECTS OF HEAT TREATMENT ON THE CORROSION POTENTIAL  OF AISI 1040 STEEL IN THE SEAWATER

Nguyễn Ngọc Minh; Nguyễn Ngọc Lan

doi:10.34238/tnu-jst.11958

EFFECTS OF HEAT TREATMENT ON THE CORROSION POTENTIAL OF AISI 1040 STEEL IN THE SEAWATER

About this article

Received: 04/02/25 Revised: 28/02/25 Published: 28/02/25

Authors

1. Nguyen Ngoc Minh , School of Materials Science and Engineering - Hanoi University of Science and Technology
2. Nguyen Ngoc Lan, School of Materials Science and Engineering - Hanoi University of Science and Technology

Abstract

Carbon steel is the most economical and widely used material in the world because it has a low price and good quality. However, carbon steel also has the disadvantage of being susceptible to corrosion, especially in highly corrosive environments such as seawater. Steel can be heat treated to slow down the destruction process and increase corrosion resistance. In this study, the corrosion potential of steel was evaluated based on heat-treated samples, including annealed, normalized, quenched, and tempered samples working in seawater. The results showed that the quenched sample obtained a solid solution structure with the highest corrosion resistance compared to the annealed and normalized samples. The corrosion potential of the sample after quenching was achieved at -0.604 V, while the corrosion potential of the samples after annealing and normalizing was -0.77 V and -0.758 V, respectively. The tempering temperature also showed an effect on the corrosion potential. In the tempering temperature range from 200 ^oC to 500 ^oC, the corrosion potential value decreased from -0.57 V to -0.64 V as the tempering temperature increased.

Keywords

Heat treatment; Corrosion behavior; AISI 1040; Corrosion potential; Carbon steel

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DOI: https://doi.org/10.34238/tnu-jst.11958

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