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Effect of carburising treatment parameters on low carbon steel properties for vehicle structures

Al-Asadi N.K.F., Ali M., Hassan A.K.

Archives of Materials Science and Engineering

2024

Vol. 129, nr 1

17--23

Purpose: The purpose of conducting this research is to improve the mechanical properties of low-carbon steel for use in various industrial applications at a lower cost than titanium and high-entropy alloys. Design/methodology/approach: We can achieve the goals by performing carburising processes at different depths that depend on the heat treatment conditions. Findings: The results showed a significant improvement in tensile strength (23, 126, 146 MPa), surface hardness (134, 516, 246 MPa), and a decrease in elongation (60, 91, 88%); in slow cooling in the furnace, water quenching, water quenching with annealing in succession where the mechanical properties are controlled by controlling the refining and heat treatment conditions to control the microstructure and desired properties that achieve the best steel surface. The importance of improvements in tensile strength, hardness, and elongation for industrial applications is the ability to withstand work in complex industrial conditions based on the amount of applied forces and high temperatures. Research limitations/implications: We suggest carrying out the carburising processes at greater depth and controlling the quenching process to achieve better mechanical properties. Originality/value: The effect of carburizing at different depths on low-carbon stainless steel was studied at different annealing conditions by controlling the cooling rate. The results showed a significant increase in tensile strength, especially for samples that were carbonised and quenched in water, as the best results in tensile strength, hardness, and elongation were for samples quenched in water.