Effect of cold and cryo rolling on microstructure and mechanical properties of low carbon steel

Anasyida, Abu Seman; Mohammed, Zaid; Hussain, Zuhailawati

doi:10.1016/j.matpr.2019.06.371

Cited by 9 publications

(3 citation statements)

References 19 publications

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“…The EBSD map and distribution of misorientation angles presented in Figure 4 show that the low angle grain boundaries (LAGBs) significantly increased with the increase of the AR from 1.0 to 1.2 for the samples with rolling reduction of 30%. In general, this will prevent grain growth and, by hindering the redistribution of dislocations at very low temperature, will contribute to an increase in their density and the development of the corresponding internal stresses [29]. Furthermore, asymmetric rolling can always greatly enhance the total strain applied to the materials.…”

Section: Characterization Of Cryogenically Rolled Microstructurementioning

confidence: 99%

Microstructure Characterization of Reversed Transformation in Cryogenically Rolled 22MnB5

et al. 2020

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Hot stamping is a well-known process to produce structural automotive parts with an excellent strength-to-weight ratio. However, this process is more expensive due to the lower energy efficiency and operating cost of the traditional roller-hearth furnace. Additionally, lower ductility and toughness are commonly recognized as the main disadvantages of the current hot stamped ultra-high-strength parts. Refinement of austenite grains could be a profitable way to improve the strength of hot stamped parts. In this work, the evolution of reversed transformation in asymmetrically cryogenically rolled samples was studied in order to control the austenite. Thermomechanical simulation and heat treatment in the salt bath were used to investigate the reversed transformation process, and the typical microstructures were characterized by transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Compared with symmetric prerolling, ferrite recrystallization could be remarkably inhibited by asymmetric rolling at the liquid nitrogen temperature (LNT) during the reheating process. Additionally, the nucleation of the austenite inner grains can also be promoted and the dynamics of the reversed transformation accelerated by asymmetric prerolling. Such phenomena might be very useful to refine the parent austenite grains before press hardening and enhance the new hot stamping strategy by partial fast reheating.

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Section: Characterization Of Cryogenically Rolled Microstructurementioning

confidence: 99%

Microstructure Characterization of Reversed Transformation in Cryogenically Rolled 22MnB5

et al. 2020

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“…Nevertheless, the usage of FSS in a variety of elds are still limited by the formability and mechanical properties compared to its counterparts (austenitic stainless steel, for example). In order to improve the mechanical properties of FSS, the application of heat treatment during rolling processes is commonly utilized to enhance the mechanical properties of steels through microstructural re nement induced by optimization of rolling processes [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

An analysis of microstructure and mechanical properties of ferritic stainless steel 430 during cold rolling and subsequent annealing

Sun

et al. 2022

Int J Adv Manuf Technol

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Systematic study on the microstructural evolution and mechanical properties of ferritic stainless steel (FSS) 430 with different annealing processes were carried out in the present work. The results show that microstructural re nement can be achieved by optimization of annealing processes, improving elongation, yield strength and tensile strength of FSS 430. An optimal annealing temperature of 950 ℃ is found with better homogeneity and enhanced mechanical properties among the cold-rolled and annealed FSSs. During annealing processes, the fraction of high angle grain boundaries of FSS 430 annealed at 950 ℃ is found to be the highest, indicating that a homogeneous microstructure with high recrystallization rate is formed inside the FSS 430 strips. In addition, high fraction of the hard grains (SF < 0.4) and low fraction of the soft grains are found inside FSS 430 annealed at 950 ℃, improving the plasticity of material. Overall, the optimization of annealing processes bene ts the microstructural re nement of FSS and thereby improving the mechanical properties of materials.

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“…This concise glossary of heat treatment terms has been embraced by the American Foundry Men's Association, the American Society for Metals, and the American Society for Testing and the Society of Automotive Engineers. To change the characteristics of metals and alloys is by heat treatment process whereby controlling the rate of dissemination and cooling within the microstructure to make them suitable for any kind of usage by changing the grain size at different phases and changing the molecular arrangement [1]. For any process that engaged with changes of chemical properties and the physical is a heat treatment process by cooling or heating a metal.…”

Section: Introductionmentioning

confidence: 99%

A Mini Review on Low Carbon Steel in Rapid Cooling Process

Abdullah¹,

Sazali²

2020

ARMS

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For heat treatment process on metal that are engaging with the physical and mechanical properties changes such as cooling and heating. The techniques for heat treatment including case hardening, annealing, tempering and precipitation strengthening, quenching and tempering. The mechanical properties like hardness, toughness and ductility can be altered by intense heat treating on steel and cooled it using different methods to produce different mechanical properties. This matters with the low carbon content in low carbon steel such as mildsteel behaviours after the heat treating depending on the thickness of the steel. To change the characteristics of steels is by heat treating whereby altering the diffusion and cooling rate within its microstructure by changing the grain size at different phases and changing the molecular arrangement. The mechanical properties of the steel with different thickness may be different due to the microstructure behaviour after heating and rapid cooling process. Finally, the behaviour of the microstructure of low carbon steel changes with different thickness that is affecting the mechanical properties after heating and quenching process.

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Effect of cold and cryo rolling on microstructure and mechanical properties of low carbon steel

Cited by 9 publications

References 19 publications

Microstructure Characterization of Reversed Transformation in Cryogenically Rolled 22MnB5

Microstructure Characterization of Reversed Transformation in Cryogenically Rolled 22MnB5

An analysis of microstructure and mechanical properties of ferritic stainless steel 430 during cold rolling and subsequent annealing

A Mini Review on Low Carbon Steel in Rapid Cooling Process

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