Title

Experimental Development of Johnson-Cook Strength Model for Different Carbon Steel Grades and Application for Single-Pass Hot Rolling

Abstract

Johnson-Cook (JC) high-temperature strength material models have been widely used in finite-element analysis (FEA) to solve variety of hot rolling problems. Herein, the temperature- and strain rate-related parameters of JC model are experimentally calibrated for eight different steel grades including SAE 1018 and SAE 1045, structural steels (ASTM A572-60, ASTM A690, and ASTM A992), two V-modified 1535/45 grades, and one automotive advanced high-strength steel grade. Experimental data are obtained from tensile tests performed at strain rates from 0.001 to 20 s-1 and at temperatures between 900 and 1200 °C. A genetic algorithm approach is used to determine JC model parameters for different steel chemistries and to calculate the rolling pressure for a simple flat rolling process using both a common analytical formulation and a finite-element model (FEM). A model for the effects of steel chemistry on the JC model parameters is also discussed.

Department(s)

Materials Science and Engineering

Second Department

Mechanical and Aerospace Engineering

Research Center/Lab(s)

Peaslee Steel Manufacturing Research Center

Keywords and Phrases

Carbon Steels; Finite-Element Modeling; High-Temperature Tensile Test; Johnson-Cook Strength Model

International Standard Serial Number (ISSN)

1611-3683; 1869-344X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2020 Wiley-VCH Verlag, All rights reserved.

Publication Date

01 Jul 2020

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