PERTANIKA JOURNAL OF SOCIAL SCIENCES AND HUMANITIES

Steel is extensively used in many applications that include construction because of its unique properties and the ease with which its properties can be enhancedfor improved performance. Due to its high malleability and strength, it can be easily machined and welded compared to other types of steel. However, the susceptibility to low performance has been associated with its low resistance to environmental degradation when exposed to corrosive or polluted environments. This study focuses on mild steel heat treatment quenched in four mediums of engine oil, water, palm oil, and air, along with its properties and corrosion susceptibility. The high temperature used for the procedure is 800 °C, 900 °C, and 1000 °C, respectively. After the heat treatment procedure, the test samples undergo corrosion testing in the sodium chloride solution for two weeks to observe the presence of corrosion products rust on its surface. The tensile machine was utilized to obtain the mechanical properties, including yield strength, tensile strength, and percentage elongation. The hardness values were obtained using the Rockwell hardness machine, and the optical microscope (OM) was used to observe the effect of the corrosion activity on the sample surface. The results obtained indicate an increase in the hardness, yield, and tensile strength, but the elongation reduces as the temperature increases.

• Ahaneku, I. E., Kamal, A. R., & Ogunjirin, O. A. (2013). Effects of heat treatment on the properties of mild steel using different quenchants. Frontiers in Science, 2(6), 153-158. https://doi.org/10.5923/j.fs.20120206.04.

• Alves, V. A., Brett, C. M. A., & Cavaleiro, A. (2013). Influence of heat treatment on the corrosion of high speed steel. Journal of Applied Electrochemistry, 31, 65-72. https://doi.org/10.1023/a:1004157623466

• Araoyinbo, A. O., Salleh, M. A. A. M., & Jusof, M. Z. (2018). Corrosion protection of mild steel in sea water using chemical inhibitor. In IOP Conference Series: Materials Science and Engineering (Vol. 343, No. 1, p. 012012). IOP Publishing. https://doi.org/10.1088/1757-899x/343/1/012012.

• Bhateja, A., Varma, A., Kashyap, A., & Singh, B. (2012). Study the effect on the hardness of the three sample grades of tool steel ie EN-31, EN-8 and D3 after heat treatment processes such as annealing, normalizing and hardening and tempering. The International Journal of Engineering and Science, 1(2), 253-259. http:// http://www.theijes.com/papers/v1-i2/AL01202530259

• Burstein, G. T., & Pistorius, P. C. (1995). Surface roughness and the metastable pitting of stainless steel in chloride solutions. Corrosion, 51(5), 380-385. https://doi.org/10.5006/1.3293603.

• Dauda, M., Kuburi, L. S., Obada, D. O., & Mustapha, R. I. (2015). Effects of various quenching media on mechanical properties of annealed 0.509wt%C - 0.178wt%Mn steel. Nigerian Journal of Technology, 34(3), 506-512. https://doi.org/10.4314/njt.v34i3.12

• Elewa, R. R., Araoyinbo, A. O., Fayomi, O. S. I., Samuel, A. U., & Biodun, M. B. (2021). Effect of machining on stainless steel: A review. In IOP Conference Series: Materials Science and Engineering (Vol. 1107, No. 1, p. 012084). IOP Publishing. https://doi.org/10.1088/1757-899x/1107/1/012084.

• Fadara, T. G., Akanbi, O. Y., & Fadare, D. A. (2011). Effect of heat treatment on mechanical properties and microstructure of NST 37-2 steel. Journal of Minerals and Materials Characterization and Engineering, 10(3), 299-308. https://doi.org/10.4236/jmmce.2011.103020.

• Hassan, M. F. (2016). Analysis of mechanical behavior and microstructural characteristics change of ASTM A-36 steel applying various heat treatment. Journal of Material Science & Engineering, 5(2), 1-6. https://doi.org/ 10.4172/2169-0022.1000227

• Ismail, N. M., Khatif, N. A. A., Kecik, M. A. K. A., & Shaharudin, M. A. H. (2016). The effect of heat treatment on the hardness and impact properties of medium carbon steel. In IOP Conference Series: Materials Science and Engineering (Vol. 114, No. 1, p. 012108). IOP Publishing. https://doi.org/10.1088/1757-899x/114/1/012108.

• Joseph, O. O., & Alo, F. I. (2014). An assessment of the microstructure and mechanical properties of 0.26% low carbon steel under different cooling media: Analysis by one-way anova. Industrial Engineering Letters, 4(7), 39-45.

• Kazeem, O. S., & Esther, T. A. (2018). Experiment on effect of heat treatment on mechanical and microstructure properties of AISI steel. Materials Today: Proceedings, 5, 17996-18001. https://doi.org/10.1016/j.matpr.2018.06.132.

• Marlon, M. N., Eduardo, M. S., Reny, A. R., & Tarcisio, G. B. (2018). Analysis of quenching parameters in AISI 4340 steel by using design of experiments. Materials Research, 4(1), 133-135. https://doi.org/10.1590/1980-5373-mr-2018-0315

• Melchers, R. E. (2005). The effect of corrosion on the structural reliability of steel offshore structures. Corrosion Science, 47(10), 2391-2410. https://doi.org/10.1016/j.corsci.2005.04.004

• Nkhoma, R. K. C, Siyasiya, C. W., & Stump, W. E. (2014). Hot workability of AISI 321 and AISI 304 austenitic stainless steels. Journal of Alloys and Compounds, 595, 103-112. https://doi.org/10.1016/j.jallcom.2014.01.157.

• Pillay, C., & Lin, J. (2014). The impact of additional nitrates in mild steel corrosion in a seawater / sediment system. Corrosion Science, 80, 416-426. https://doi.org/10.1016/j.corsci.2013.11.047.

• Roland, T. L., Cleophas, A. L., & Idehai, O. (2018). Effect of heat treatment processes on the localized corrosion resistance of austenitic stainless steel type 301 in chloride/sulphate solution. Results in Physics, 11, 570-576. https://doi.org/10.1016/j.rinp.2018.09.056

• Samuel, A. U., Araoyinbo, A. O., Elewa, R. R., & Biodun, M. B. (2021). Effect of machining of aluminium alloys with emphasis on aluminium 6061 alloy - A review. In IOP Conference Series: Materials Science and Engineering (Vol. 1107, No. 1, p. 012157). IOP Publishing. https://doi.org/10.1088/1757-899x/1107/1/012157.

• Seidu, S. O., & Kutelu, B. J. (2013). Effect of heat treatments on corrosion of welded low-carbon steel in acid and salt environments. Journal of Minerals and Materials Characterization and Engineering, 1(3), 95-100. https://doi.org/10.4236/jmmce.2013.13018

• Sharma, P., & Roy, H. (2014). Pitting corrosion failure of an AISI stainless steel pointer rod. Engineering Failure Analysis, 44, 400-407. ttps://doi.org/10.1016/j.engfailanal.2014.06.001

• Shi, D., Kang, K., & Gao, G. (2017). Effect of quenching parameters on the mechanical properties of the 7A04 aluminium alloy. Materials and Technology, 51(1), 95-99. https://doi.org/10.17222/mit.2015.267

• Tukur, S. A., Dambatta, M. S., Ahmed, A., & Muaz, N. M. (2014). Effect of heat treatment temperature on mechanical properties of the AISI 304 stainless steel. International Journal of Innovative Research in Science Engineering and Technology, 3, 9516-9520.

• Xiaohui, C., Jia, L., Xu, C., Huaming, W., & Zheng, H. (2018). Effect of heat treatment on microstructure, mechanical and corrosion properties of austenitic stainless steel 316L using arc additive manufacturing. Materials Science and Engineering: A, 715, 307-314. https://doi.org/10.1016/j.msea.2017.10.002.