Justification of the Changes in Work Hardening Exponent Based on Micro-Mechanisms of Deformation in a Plain Carbon Steel

• Autorzy: Mohsenzaadeh Meymanat Sadat

Identyfikatory

DOI

10.24425/amm.2024.150920

• Języki publikacji: EN

Abstrakty

EN

Although several studies have been conducted on the evaluation of work hardening behavior of dual-phase steels with the Hollomon equation, few studies have investigated the factors affecting the number of work hardening stages and the changes of work hardening exponent. Therefore, the aim of this study is to provide a deeper understanding of the deformation micro-mechanisms affecting the work hardening exponent and work hardening behavior in terms of Hollomon equation. For this purpose, samples with microstructures of ferrite-cementite, ferrite-cementite-martensite and ferrite-martensite were produced using appropriate thermomechanical treatments and then subjected to tensile tests. The changes in the work hardening exponent of different microstructures were explained by using the results obtained from the microstructure based modeling of the deformation behavior of the samples. The rate of storage of dislocation loops around particles was suggested as the most important factor influencing the changes in work hardening exponent.

Słowa kluczowe

EN

work hardening exponent; deformation micro-mechanisms; martensite; cementite; bimodal particle size distribution

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2024
• Tom: Vol. 69, iss. 3
• Strony: 997--1003
• Opis fizyczny: Bibliogr. 24 poz., fot., rys., tab.

Twórcy

autor

Mohsenzaadeh Meymanat Sadat

• University of Gonabad, Department of Materials and Metallurgical Engineering, Gonabad, Iran

• https://orcid.org/0000-0002-7474-477X

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