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Mathematical Description of the Microstructural Modifications and Changes in the Mechanical Properties during Spheroidization of Medium‐Carbon Steel
Author(s) -
Guk Sergey,
Kawalla Rudolf,
Prahl Ulrich
Publication year - 2019
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201800335
Subject(s) - materials science , microstructure , ultimate tensile strength , carbide , ferrite (magnet) , metallurgy , thermal , composite material , thermodynamics , physics
A set of experiments is carried out to clarify the microstructure development during an intercritical spheroidization process in AISI 1045 ferritic–perlitic steel, as well as its structure‐property relationships at room temperature. Microstructures with a distinctive combination of fine spheroidized carbide particles within a ferrite matrix are created through different heat‐treatment combinations. The validation and evaluation of the accuracy of the spheroidizing kinetics and particle coarsening, as well as the prediction of tensile properties of the investigated material, are carried out based on the common empirical and empirical‐physical models. Some of the models are then adapted for the material. Quantitative analyses reveals that not all of the model‐based predictions correlate well with the experimental measurements. Such instances are associated with the peculiarities of the investigated material.