Microstructure and Mechanical Properties of 0.18%-C Steel Samples Processed Through Five Different Heat Treatment Techniques

Kulkarni, Avaneesh Rajesh; Raju, P. Venkateshwar; Sarma, Partha Pratim; Dewangan, Saurabh; Selvaraj, Senthil Kumaran

doi:10.1007/s40033-023-00633-0

Cited by 3 publications

(1 citation statement)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Studies have shown the potential of various heat treatment processes to improve mechanical properties. For instance, Calik found that heat treatment significantly enhanced hardness and mechanical properties in steels like AISI 1020, AISI 1040, and AISI 1060, particularly with increased cooling rates [9]. Similarly, Kini et al observed substantial improvements in hardness and impact strength in heat-treated EN 9 steel.…”

Section: Introductionmentioning

confidence: 98%

Effect of carburizing time treatment on microstructure and mechanical properties of low alloy gear steels

Boumediri,

Touati,

Debbah

et al. 2024

Mater. Res. Express

View full text Add to dashboard Cite

Gas carburizing significantly enhances the surface properties of low-alloy gear steels, resulting in superior micro-hardness, layer thickness, carbon content, and overall mechanical properties. Unlike other thermochemical processes such as nitriding and carbonitriding, which have limitations in core properties and hardening depth, gas carburizing offers unmatched surface hardness, wear resistance, and mechanical strength. This makes it ideal for demanding applications in the automotive, aerospace, and manufacturing industries. In this research, samples were gas-carburized for 4, 6, or 8 h. The results showed significant improvements: micro-hardness increased from approximately 140 HV to over 819 HV, and the surface layer thickness grew by more than 41%, from 1166 μm to 1576 μm. Additionally, the carbon content in the surface layer increased by over 450%, reaching up to 0.94 wt%. Clear correlations were observed between the duration of heating and the mechanical properties. Longer heating times, particularly after 8 h, raised ultimate tensile strength from 427.29 MPa to 778.33 MPa, while simultaneously decreasing elongation from 26.07% to 2.88% and resilience from 180 J cm−2 to 6.66 J cm−2. This optimization not only enhances surface hardness and durability but also improves key mechanical properties such as tensile strength, stiffness, resilience, and overall mechanical performance.

show abstract

Section: Introductionmentioning

confidence: 98%

Effect of carburizing time treatment on microstructure and mechanical properties of low alloy gear steels

Boumediri,

Touati,

Debbah

et al. 2024

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

Heat Treatment Effects on Microstructure and Hardness of Low-Carbon AISI 1020 Steel

Reddy,

Dewangan,

Singh

et al. 2024

J. Inst. Eng. India Ser. D

View full text Add to dashboard Cite

Qualitative Analysis of the Heat Transfer in a Package of Square Steel Sections

Wyczółkowski,

Bagdasaryan,

Aghbalyan

et al. 2024

Materials

View full text Add to dashboard Cite

During the heat treatment of square or rectangular steel sections, a heated charge, arranged in regular packages, is placed inside a furnace. This type of charge forms a porous medium through which a complex heat flow occurs during heating. Several heat transfer mechanisms act simultaneously within this medium: conduction through the section walls, conduction and natural convection within the gas, thermal radiation between the section walls, and complex heat transfer (mainly contact conduction) at the joints between the adjacent sections. This article presents a qualitative analysis of heat transfer, aiming to determine the contribution of individual heat transfer mechanisms to the overall process. For this purpose, an analytical model of complex heat transfer within the package was employed, based on the thermo-electric analogy. The results from experimental studies were used to calculate the natural convection and heat transfer at the joints. It was assumed that the material of the sections was low-carbon steel, and the gas was air. Calculations were performed for the temperature range of 25 °C to 700 °C, considering three different geometrical configurations of the sections. It was shown that the effective thermal conductivity (ETC) of the package for the considered geometrical cases varies between 2.2 and 10.6 W/(m·K), which is an order of magnitude lower than the thermal conductivity of the individual sections. This parameter increased dynamically with the temperature. Moreover, the heat transfer intensity within the package of sections was nearly an order of magnitude lower than the heat conduction observed in a solid steel charge. Additionally, it was shown that the primary heat transfer mechanisms governing the heating process were thermal conduction (in the lower temperature range—up to approximately 350 °C) and thermal radiation (in the higher temperature range—above 350 °C). The gas convection inside the sections had a minimal impact on the heating process of the package. The primary parameters influencing the quality of the results were the joint resistance between the adjacent sections and the emissivity of the sections. The presented model can be used for the optimization of heat treatment processes for the considered charge.

show abstract

Microstructure and Mechanical Properties of 0.18%-C Steel Samples Processed Through Five Different Heat Treatment Techniques

Cited by 3 publications

References 25 publications

Effect of carburizing time treatment on microstructure and mechanical properties of low alloy gear steels

Effect of carburizing time treatment on microstructure and mechanical properties of low alloy gear steels

Heat Treatment Effects on Microstructure and Hardness of Low-Carbon AISI 1020 Steel

Qualitative Analysis of the Heat Transfer in a Package of Square Steel Sections

Contact Info

Product

Resources

About