Dynamic Recrystallization Kinetics in Medium-Carbon Boron Steel

Abstract

Understanding the flow behavior of steels during hot forming is crucial for optimizing both rolling and forging processes. This work examines the kinetics of hot deformation and dynamic recrystallization (DRX) of a boron-containing medium-carbon 15B35 steel by deformation dilatometry at temperatures ranging from 900 to 1200 °C and strain rates of 0.01 to 1 s-1. Microstructural evolution, grain size, and orientation were evaluated by optical microscopy. A Zener–Hollomon parameter approach was used to describe the combined influence of temperature and strain rate and resulted in an activation energy of 296.07 kJ/mol. The results establish a quantitative relationship between deformation conditions, dynamic recrystallization behavior, and grain size evolution, providing a predictive framework for thermomechanical processing of medium-carbon boron steels.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Dynamic Recrystallization (DRX); Forging; Grain Size Evolution; Hot Rolling; Kinetics; Medium-Carbon Boron Steel; Zener-Hollomon Parameter

International Standard Book Number (ISBN)

978-093076745-7

International Standard Serial Number (ISSN)

1551-6997

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2026, All rights reserved.

Publication Date

01 Jan 2026

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