An Analytical Model for Calculation of the Steel Hardness after Continuous Cooling

A number of modern engineering steel grades were analyzed using the CCT diagrams plotted by means of the dilatometer. The statistical analysis of the experimental data allowed for the determination of the equations connecting the critical cooling rate to achieve fully martensitic microstructure and...

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Bibliographic Details
Published inIOP conference series. Materials Science and Engineering Vol. 969; no. 1; pp. 12015 - 12019
Main Authors Maisuradze, M V, Ryzhkov, M A, Lebedev, D I
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.11.2020
Subjects
Chemical composition
Cooling
Cooling rate
Extensometers
Hardness
Martensite
Statistical analysis
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Summary:A number of modern engineering steel grades were analyzed using the CCT diagrams plotted by means of the dilatometer. The statistical analysis of the experimental data allowed for the determination of the equations connecting the critical cooling rate to achieve fully martensitic microstructure and the martensite hardness with the chemical composition of the steel. The dependence of the steel hardness on the cooling rate in the range of 0.1...30 °C/s was determined. It was shown that this dependence had the logarithmic character for every studied steel grade. The equations connecting the coefficients of the logarithmic function with the chemical composition of steel were obtained.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/969/1/012015