Determination of the dynamic recrystallization kinetics model for SCM435 steel

2013 ◽  
Vol 28 (4) ◽  
pp. 819-824 ◽  
Author(s):  
Dong Xu ◽  
Miaoyong Zhu ◽  
Zhengyou Tang ◽  
Chao Sun
Keyword(s):  
Dynamic Recrystallization ◽  
Kinetics Model ◽  
Recrystallization Kinetics ◽  
Scm435 Steel

A New Dynamic Recrystallization Kinetics Model of Cast-Homogenized Magnesium Alloys

2020 ◽  
Vol 52 (1) ◽  
pp. 316-331
Author(s):  
Jian Zeng ◽  
Fenghua Wang ◽  
Shuai Dong ◽  
Xi Nie ◽  
Yu Fan ◽  
...  
Keyword(s):  
Dynamic Recrystallization ◽  
Magnesium Alloys ◽  
Kinetics Model ◽  
Recrystallization Kinetics

Dynamic recrystallization kinetics model of X70 pipeline steel

2012 ◽  
Vol 39 ◽  
pp. 168-174 ◽  
Author(s):  
Yaowen Xu ◽  
Di Tang ◽  
Yong Song ◽  
Xiaogang Pan
Keyword(s):  
Dynamic Recrystallization ◽  
Pipeline Steel ◽  
Kinetics Model ◽  
X70 Pipeline Steel ◽  
Recrystallization Kinetics

A Study on Dynamic Recrystallization Kinetics Model of 45Cr4NiMoV

2015 ◽  
Vol 789-790 ◽  
pp. 160-164
Author(s):  
Dae Hwan Yoon ◽  
Ya Zhang ◽  
Dong Won Jung
Keyword(s):  
Dynamic Recrystallization ◽  
Critical Condition ◽  
Critical Strain ◽  
Inflection Point ◽  
Kinetics Model ◽  
Recrystallization Kinetics ◽  
Minimum Value ◽  
Strain Model

The dynamic recrystallization critical strain of this alloy was investigated by Poliak and other scholars using the hardening rate (θ) method; they thought the critical condition corresponded to the inflection point of the lnθ-ε curve and the minimum value on the ∂ (lnθ)/∂ε-ε curve. A dynamic recrystallization critical strain model of 45Cr4NiMoV was established.

Dynamic Recrystallization of Mg-8Gd-3Y-1Nd-0.5Zr Alloy during Hot Deformation

2017 ◽  
Vol 898 ◽  
pp. 311-322 ◽  
Author(s):  
Hong Na Qi ◽  
Zhi Min Zhang ◽  
Jian Min Yu ◽  
Xue Yan Yin ◽  
Zhi Yuan Du
Keyword(s):  
Dynamic Recrystallization ◽  
Volume Fraction ◽  
Constitutive Relationship ◽  
Kinetics Model ◽  
Deformation Condition ◽  
Continuous Dynamic Recrystallization ◽  
Recrystallization Kinetics ◽  
Continuous Dynamic ◽  
Gleeble 3500 ◽  
Strain Equation

Uniaxial hot compression was conducted on Gleeble-3500 thermo simulation machine. Based on stress-strain curves, the constitutive relationship and the dynamic recrystallization kinetics model of Mg-8Gd-3Y-1Nd-0.5Zr were established. Simultaneously, dynamic recrystallization mechanism of this alloy under different deformation condition was investigated by SEM, EBSD and OM. The critical strain equation and the dynamic recrystallization kinetics model were obtained. The results showed that the dynamic recrystallization volume fraction increased with the increasing of the strain.The twin dynamic recrystallization (TDRX) was the mainly DRX mechanism at 350°C;the dynamiac recrysallization mechanism was dominated by continuous dynamic recrystallization (CDRX) at 400°C and 450°C. At higher temperature (500°C), the dynamic recrystallization was dominated by discontinuous dynamic recrystallization (DDRX) with a small amount of CDRX.

Determination of Recrystallization Kinetics Model of 30Cr2Ni4MoV Steel Based on Dislocation Density

2017 ◽  
Vol 263 ◽  
pp. 59-66
Author(s):  
Peng Zhou ◽  
Qing Xian Ma
Keyword(s):  
Dislocation Density ◽  
Model Comparison ◽  
Kinetics Model ◽  
Structure Evolution ◽  
Metallographic Analysis ◽  
Recrystallization Kinetics ◽  
Proposed Model ◽  
Different Temperatures ◽  
Predicted Values ◽  
Experimental Values

A new model to predict the structure evolution of 30Cr2Ni4MoV steel is proposed based on the dislocation density in this research. Hot compression of 30Cr2Ni4MoV steel is carried out on Gleeble 1500 at different temperatures from 1233 K to 1473 K with a strain rate of 0.01 s-1 and the deformed samples are immediately quenched by water to frozen the austenite structure. The recrystallization kinetics model of 30Cr2Ni4MoV steel is successfully established by inverse analysis of the flow curve based on the relation between flow stress and dislocation density. In order to validate the proposed model, comparison between the predicted values and experimental values obtained by metallographic analysis is implemented. It is shown that the predicted results agree with the experimental results well.

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