Dynamic Recrystallization and Recovery Behaviors in Austenite of a Novel Fe-1.93Mn-0.07Ni-1.96Cr-0.35Mo Ultrahigh Strength Steel

Due to the complex composition and high proportion of alloys in traditional ultrahigh strength steel, the dilemma caused by ultrahigh strength and low toughness in casting and forging processes requiring subsequent heat treatment can be mitigated with an efficient and economical rolling process. In...

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Bibliographic Details
Published in:Journal of chemistry 2021-07, Vol.2021, p.1-8
Main Authors: Chen, Yongli, Li, Yuhua, Zhou, Xuejiao, Jiang, Yueyue, Tan, Fei
Format: Article
Language:English
Subjects:
Activation energy
Alloys
Analysis
Deformation effects
Dynamic recrystallization
Forging
Founding
Heat treatment
High strength steels
High temperature
Hot rolling
Hot working
Mathematical models
Metal industry
R&D
Recovery
Research & development
Rheology
Science
Steel
Strain analysis
Strain hardening
Stress-strain relationships
Training
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Summary:Due to the complex composition and high proportion of alloys in traditional ultrahigh strength steel, the dilemma caused by ultrahigh strength and low toughness in casting and forging processes requiring subsequent heat treatment can be mitigated with an efficient and economical rolling process. In this work, the effect of deformation parameters on dynamic recrystallization (DRX) and dynamic recovery (DRV) is discussed through stress-strain analysis, the DRV mathematical model is obtained, and then the dynamic recrystallization activation energy, Zener–Hollomon equation, and hot working equation are obtained. The critical strain of DRX detected by the P-J method is εc/εp=0.631, which indicates that dynamic recrystallization of this novel steel is relatively easy to achieve by the rolling process. These models and conclusions have potential to be generalized for the formulation of process specification and process configuration without requiring extensive material testing.
ISSN:2090-9063
2090-9071
DOI:10.1155/2021/2809145