The authors hereof have studied how the thickness of 0.08% carbon cold-rolled sheet steel affects its properties. They experimented with tensioning such sheets and plotted the metal hardening curves. The paper presents comparative analysis of how the material thickness affects the coefficients approximating the hardening curves. A comparison of the hardening curves of control and annealed specimens is given. Experiments have identified the effects that the pre-accumulated plastic strain has on the material properties. It is revealed that lower thickness alters the force parameters of the process and affects the ultimate tensile strain. The paper formulates recommendations on using the estimates obtained by the software simulation of the deformation process. Hardening-curve coefficients approximation functions are proposed in order to predict how changing the thickness would affect the material properties.
The research team studied the hardness of cold-rolled sheets of varying thicknesses containing 0.08% carbon. Greater thickness correlated with lower mean hardness. The hardness was found to drop in the middle of a plate and to increase gradually towards the edges. This pattern was observed regardless of the thickness of thin cold-rolled sheet steel. The change in hardness may indicate uneven accumulated strain in the sheets rolled to a desired value. Pre-hardened sheets were analyzed to find whether the hardness was homogeneous through the thickness. The material was hardened by axial tensioning. Analysis showed that at greater accumulated strain, the through-thickness hardness was affected as well. However, the difference was less pronounced at the edge as well as in the middle of sheets. The paper shows graphs of the hardness distribution through thickness.
The authors conduct the research of the properties of a cold-rolled sheet made of corrosion-resistant steel 12Kh18N10T of a variable thickness. Further, they build hardening curves and defined their coefficients. The research identifies the patterns of the thickness impact on the nature of hardening of the sheet material 12Kh18N10T. The authors conduct the measurements of micro-hardness along the sheet thickness. The article confirms the suggestion that hardness in the sheet center decreases for various thicknesses. The authors further present a comparative analysis of hardness values distribution for the corrosion-resistant steel 12Kh18N10T and steel containing 0.08% of carbon. It is revealed that lower material thickness alters the strength parameters of the process and increases the mean material hardness. The authors provide the hardening curves for various sheet thicknesses and the dependence of hardness distribution on the thickness of these sheets.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.