The kinetics of dynamic recrystallization of 42CrMo steel

The dynamic recrystallization behavior in 42CrMo steel was investigated by hot compression tests. The effects of deformation temperature, strain rate, and initial austenite grain size on the dynamic recrystallization behavior were discussed. Based on the experimental results, the kinetic equations f...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2012-10, Vol.556, p.260-266
Main Authors: Chen, Ming-Song, Lin, Y.C., Ma, Xue-Song
Format: Article
Language:English
Subjects:
Applied sciences
Austenitic stainless steels
Bulk deformation
Chromium molybdenum steels
Cold working, work hardening
annealing, quenching, tempering, recovery, and recrystallization
textures
Cross-disciplinary physics: materials science
rheology
Deformation
Dynamic recrystallization
Elasticity. Plasticity
Exact sciences and technology
Grain size
Heat treatment
Hot pressing
Kinetic equations
Materials science
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Other heat and thermomechanical treatments
Physics
Production techniques
Steel
Strain rate
Structural steels
Thermomechanical processing
Thermomechanical treatment
Treatment of materials and its effects on microstructure and properties
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Summary:The dynamic recrystallization behavior in 42CrMo steel was investigated by hot compression tests. The effects of deformation temperature, strain rate, and initial austenite grain size on the dynamic recrystallization behavior were discussed. Based on the experimental results, the kinetic equations for the dynamic recrystallization behavior of 42CrMo steel were proposed. Results indicate that the effects of the deformation temperature, strain rate and initial austenitic grain size on the dynamic recrystallization behavior in 42CrMo are significant. The dynamic recrystallization in 42CrMo steel easily occurs at high deformation temperature, low strain rate and fine initial austenitic grain. A good agreement between the experimental and predicted results shows that the proposed kinetic equations can give an accurate estimate of the dynamic recrystallization behavior in hot deformed 42CrMo steel.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2012.06.084