Abstract
Quenching is one of the primary processes to improve mechanical properties in steels, particularly hardness. Quenching is well established for different geometries of individually treated steel components; while in-steam quenching of large diameter continuously cast steel bar has several specific features which are difficult and costly to experimentally optimize. The end-quench Jominy test has been used extensively to study the hardenability of different steel grades. Different numerical, analytical, and empirical models have been developed to simulate the Jominy process and to understand quenching of steels. However, it is not straight forward to translate experimental data from Jominy test on instream quenched large diameter continuously cast products. Therefore, in this work, coupled thermal, mechanical, and metallurgical models were used to simulate the end-quench Jominy test and in-stream quenched industrial round billets with a goal to obtain similarity of experimental structure and properties for both quenched products. For this purpose, finite element analysis (FEA) was employed using the software FORGE® (by Transvalor). Used thermophysical properties were generated by JMATPro® software. The evolution of microstructure during quenching and resulting hardness were simulated for AISI 4130, and AISI 4140 steel grades. The cooling rates at different positions in the Jominy bar were determined by simulation and compared to experimental. After verification and validation, the FEA simulation was utilized to predict different phases and hardness at different conditions in industry produced round billets. Additionally, relations between Jominy positions and radial positions in the billet were established allowing us to predict structure and properties in inline quenched continuously cast bar having different diameters.
Recommended Citation
J. S. Alabi et al., "Impact of Quenching Intensity Conditions on using a Finite Element Model to Investigate the Microstructure and Hardenability of Low-Alloy Steel," 29th International Federation for Heat Treatment and Surface Engineering World Congress, IFHTSE 2024, pp. 272 - 280, ASM International, Jan 2024.
The definitive version is available at https://doi.org/10.31399/asm.cp.ifhtse2024p0272
Department(s)
Materials Science and Engineering
Second Department
Mechanical and Aerospace Engineering
Publication Status
Free Access
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 ASM International, All rights reserved.
Publication Date
01 Jan 2024
Included in
Aerospace Engineering Commons, Applied Mechanics Commons, Engineering Mechanics Commons, Manufacturing Commons, Mechanics of Materials Commons, Metallurgy Commons, Structural Materials Commons
