A method to predict flow stress considering dynamic recrystallization during hot deformation

In order to establish flow stress relationship for metals and alloys in a form that can be used in numerical simulations. A method to predict flow stress considering dynamic recrystallization (DRX) during hot deformation is presented in this paper. Flow stress model is expressed by 9 independent par...

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Bibliographic Details
Published in:Computational materials science 2008-12, Vol.44 (2), p.760-764
Main Authors: He, Xiaoming, Yu, Zhongqi, Lai, Xinmin
Format: Article
Language:English
Subjects:
42CrMo steel
Applied sciences
Cold working, work hardening
annealing, quenching, tempering, recovery, and recrystallization
textures
Cross-disciplinary physics: materials science
rheology
Dynamic recrystallization
Elasticity. Plasticity
Exact sciences and technology
Flow stress
Hot deformation
Magnesium alloy AZ31B
Materials science
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Physics
Treatment of materials and its effects on microstructure and properties
Zener–Hollomon parameter
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Summary:In order to establish flow stress relationship for metals and alloys in a form that can be used in numerical simulations. A method to predict flow stress considering dynamic recrystallization (DRX) during hot deformation is presented in this paper. Flow stress model is expressed by 9 independent parameters and they are obtained by least-square method. The flow stress constitutive equations of magnesium alloy AZ31B and 42CrMo steel during hot deformation were developed by the proposed method. The predicted stress–strain curves are in good agreement with experimental results, which confirmed that the developed models are accurate and the proposed method is effective to establish flow stress equations of metals and alloys during hot deformation.
ISSN:0927-0256
1879-0801
DOI:10.1016/j.commatsci.2008.05.021