Effect of intercritical annealing with high cooling rate associated with cold deformation and subcritical annealing on microstructure and mechanical properties of SAE 52100

Spindola, Mirelle Oliveira; Buono, Vicente Tadeu Lopes

doi:10.1016/j.jmrt.2020.05.106

Cited by 12 publications

(2 citation statements)

References 5 publications

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“…For medium-carbon steel, the common carbide spheroidization method on an industrial scale is "cold rolling þ subcritical spheroidizing annealing". [4][5][6] The cold deformation before subcritical annealing has an important influence on the spheroidization kinetics of carbide. W.Y.…”

Section: Introductionmentioning

confidence: 99%

Subcritical Spheroidization Annealing of Cold‐Rolled Cr–Mo Microalloyed Medium‐Carbon Steel with Different Initial Microstructure

et al. 2023

steel research int.

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According to the industrial production process of fine‐blanking steel (including hot rolling, cold rolling, and spheroidization annealing), a Cr–Mo‐microalloyed medium‐carbon steel is taken as the research object for laboratory simulation in this paper. The ferrite+pearlite (F + P) and ferrite+bainite (F + B) are obtained by changing coiling temperature during hot rolling conduct cold rolling with 25%, 50%, and 75% total reduction and subcritical annealing at 740 °C for 1–8 h. Microstructure evolution during spheroidization annealing is studied and analyzed by an electron probe microanalyzer, electron back‐scattered diffraction, DICTRA simulation, transmission electron microscopy, and microhardness tester. Compared with F + P, the dislocation density distributed to the ferrite of F + B during cold rolling is higher. The cold‐rolled F + B microstructure shows the rapid spheroidization annealing behavior, which leads to the uniform distribution of finer spherical carbides and the full recrystallization of the ferrite matrix. In addition, properly increasing the reduction of cold rolling can also speed up the spheroidization process of carbide. Herein, a 50% reduction is determined to be the most suitable cold‐rolling process parameter for carbide spheroidization. Moreover, the recrystallization of ferrite is enhanced with the increase of cold‐rolling reduction.

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Section: Introductionmentioning

confidence: 99%

Subcritical Spheroidization Annealing of Cold‐Rolled Cr–Mo Microalloyed Medium‐Carbon Steel with Different Initial Microstructure

et al. 2023

steel research int.

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“…Nano-scale grains were obtained after warm deformation and cycle quenching. Spindola et al 8) investigated the microstructure and mechanical properties of hot-rolled tubes of SAE 52100 steel after annealing and cold deformation. The tubes were heat treated to intercritical annealing in a furnace with a soaking time of 1-3 h and cooling at high or low rates.…”

Section: Introductionmentioning

confidence: 99%

Analysis of process parameters of hypoeutectoid steel ultrasonic horns with different heat treatment processes

Nguyen¹,

Nguyen²,

Tran³

et al. 2021

Jpn. J. Appl. Phys.

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An ultrasonic horn operated at 28 kHz was simulated by finite element analysis. The horns and samples were formed from hypoeutectoid steel containing 0.178 wt% C and 1.3 wt% Cr. They were austenized at 875 °C with a soaking time of 33 min, then quickly water-quenched and oil-quenched. Tempering was performed at different temperatures (200 °C–500 °C) and soaking times (120–240 min). Over the cross-section, the hardness was consistently lower at the center position than at other positions. The maximum (minimum) hardness was achieved after water and oil quenching, tempering at low (high) temperature, and soaking for a short (long) time. Heat treatment decreased the anti-resonance frequency of the ultrasonic horns but increased the mechanical quality factor and the impedance at the anti-resonance frequency. The mechanical quality factor was proportional to both tempering temperature and soaking time. As shown in microstructural images, high mechanical quality was also related to small grain size.

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Adjusting the Thermomechanical Condition to Change the Microstructure of C–Mn Cold Heading Quality Steel for Rapid Cementite Spheroidization at Subcritical Temperature: Effect of Stored Energy

Kim

Lee

et al. 2022

Metall Mater Trans A

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Effect of intercritical annealing with high cooling rate associated with cold deformation and subcritical annealing on microstructure and mechanical properties of SAE 52100

Cited by 12 publications

References 5 publications

Subcritical Spheroidization Annealing of Cold‐Rolled Cr–Mo Microalloyed Medium‐Carbon Steel with Different Initial Microstructure

Subcritical Spheroidization Annealing of Cold‐Rolled Cr–Mo Microalloyed Medium‐Carbon Steel with Different Initial Microstructure

Analysis of process parameters of hypoeutectoid steel ultrasonic horns with different heat treatment processes

Adjusting the Thermomechanical Condition to Change the Microstructure of C–Mn Cold Heading Quality Steel for Rapid Cementite Spheroidization at Subcritical Temperature: Effect of Stored Energy

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