Studies of the Properties and Microstructure of Heat Treated 0.27% C and 0.84% Mn Steel

Cold treatment techniques are used to enhance the mechanical properties of metal alloys, whose most important characteristics are strength, roughness, and microstructure. The aim of this research is to test the effect of Conventional Shot Peening (CSP) and Severe Shot Peening (SSP) on the mechanical properties of ST37-2 steel. The results of the experiments showed enhancements in surface roughness and tensile strength. However, shot peening decreased the ductility of the metal and caused changes in its microstructure that are indicated in the XRF and XRD tests. Results’ data are provided as an original contribution to the literature while they are compared with the existing data.

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“…In the SSP case, an intrinsic structure is observed. The ferrite and perlite phases are clear with SSP A28-30 [20].…”

Section: F Optical Microscopementioning

confidence: 98%

Effects of Severe Plastic Deformation on the Mechanical Properties of Welded ST37-2 Steel

Sahhal

Günay

2020

Eng. Technol. Appl. Sci. Res.

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“…Hematite (Fe 2 O 3 ), magnetite (Fe 3 O 4 ), and wustite (FeO) are the major layers found in the oxide scales that form on the steel surface [3][4][5][6][7][8]. The morphologies of the oxide scales differ according to the alloying elements [9][10][11][12][13][14] and oxidizing atmosphere [15][16][17][18][19]. Stainless steel or alloy steel models have been used in many studies, but there are a limited number of studies regarding hotrolled steel [20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of the Oxidation Behavior of Hot-Rolled Steel established from Medium and Thin Slabs oxidized in 20% H2O-N2 at 600-900°C

Singthanu,

Nilsonthi

2024

Eng. Technol. Appl. Sci. Res.

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This study focuses on the oxidation behavior of oxide scale on hot-rolled steel from a Thailand steel industry. Hot-rolled steel established from the medium and thin slabs was studied. The oxidation behavior was conducted in a horizontal furnace with 20%H2O-N2 to simulate steel oxidation during the hot rolling line. The scale was formed at a temperature range of 600-900°C for 30, 60, and 90 min. The scale morphology can be seen via Scanning Electron Microscope (SEM-EDS). The oxide phase was investigated via X-Ray Diffraction (XRD). The results show that iron oxides such as hematite (Fe2O3) and magnetite (Fe3O4) were produced on the studied steel. The oxidation behavior of the studied steel was followed by a parabolic law. The mass gain increased with increasing temperatures. The steel established from a medium slab exhibited a lower oxidation rate than the steel established from a thin slab. The reason for this could be the high amount of oxide containing silicon at the steel-scale interface, which promoted the oxidation resistance of the steel established from the medium slab. The influence of different slab types and its alloying elements was studied to comprehend the oxidation behavior. As a result, the alloying element in the hot-rolled steel was controlled in the design process.

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“…Pearlite transformation takes place as fine pearlite, coarse pearlite, or a mixture of fine, medium pearlite, or lower bainite depending on the cooling rates (very slow, slow, moderate, and high). Mohamed 14 studied the behavior of the material at different quenching temperatures. The resultant mechanical properties are interdependent on the temperature.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of optimum condition to improve the microstructure in hot-rolled medium carbon steel by elimination of coarse pearlite patches

Mishra¹,

Kayal²

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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The present study is aimed to eliminate the undesirable microstructure in the real working condition of the steel unit. In this work, the microstructure of hot-rolled medium carbon steel (grade 45C8) is studied for application in the automotive industry. The effect of the temperature and rolling rate on the microstructure has been thoroughly investigated by analyzing the microstructure containing ferrite and pearlite phases after each trial run of hot-rolled steel. The desired microstructure of fine ferrite and pearlite is very much essential in hot-rolled medium carbon steel for better strength and uniform properties of the material. The formation of coarse pearlite is undesirable, which may lead to breakage during drawing and hardness variation in the hot-rolled steel. Therefore, this study is focused to find the optimum condition for achieving the microstructure containing uniform distribution of fine pearlite and ferrite without the presence of blocky pearlite patches.

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Studies of the Properties and Microstructure of Heat Treated 0.27% C and 0.84% Mn Steel

Cited by 5 publications

References 6 publications

Effects of Severe Plastic Deformation on the Mechanical Properties of Welded ST37-2 Steel

Effects of Severe Plastic Deformation on the Mechanical Properties of Welded ST37-2 Steel

A Comparative Study of the Oxidation Behavior of Hot-Rolled Steel established from Medium and Thin Slabs oxidized in 20% H2O-N2 at 600-900°C

Evaluation of optimum condition to improve the microstructure in hot-rolled medium carbon steel by elimination of coarse pearlite patches

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