A numerical model based on internal-state-variable method for the microstructure evolution during hot-working process of TA15 titanium alloy

2010 ◽  
Vol 527 (15) ◽  
pp. 3464-3471 ◽  
Author(s):  
Z.C. Sun ◽  
H. Yang ◽  
G.J. Han ◽  
X.G. Fan
Keyword(s):  
Titanium Alloy ◽  
Numerical Model ◽  
Microstructure Evolution ◽  
Internal State ◽  
Hot Working ◽  
Variable Method ◽  
Internal State Variable ◽  
Working Process ◽  
State Variable ◽  
Ta15 Titanium Alloy

scholarly journals Modeling of flow behavior and microstructure evolution for Mg-6Gd-5Y-0.3Zr alloy during hot deformation using a unified internal state variable method

2020 ◽  
Vol 9 (4) ◽  
pp. 7669-7685 ◽  
Author(s):  
Wenchen Xu ◽  
Can Yuan ◽  
He Wu ◽  
Zhongzhe Yang ◽  
Guojing Yang ◽  
...  
Keyword(s):  
Microstructure Evolution ◽  
Hot Deformation ◽  
Internal State ◽  
Flow Behavior ◽  
Variable Method ◽  
Internal State Variable ◽  
State Variable

Constitutive Modeling of Beta Titanium Alloy Ti-10V-4.5Fe-1.5Al during Hot Deformation Process

2012 ◽  
Vol 510 ◽  
pp. 729-733
Author(s):  
Feng Bo Han ◽  
Jin Shan Li ◽  
Hong Chao Kou ◽  
Bin Tang ◽  
Min Jie Lai ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
High Temperature ◽  
Dislocation Density ◽  
Internal State ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Model Parameters ◽  
Internal State Variable ◽  
Dislocation Interaction ◽  
State Variable

A constitutive model using dislocation density rate as an internal state variable has been proposed for hot working of β titanium alloy in this paper. The β phase was only taken into consideration during high temperature deformation. The solution strengthening and dislocation interaction were included in the constitutive equations. The strength coefficient was determined by equivalent vanadium content, Veq, which was calculated according to the alloy constituent. A Kocks-Mecking model was adopted to describe the variation of dislocation density. The constitutive relationship of a β titanium alloy Ti-10V-4.5Fe-1.5Al for high temperature deformation was established using the internal-state-variable based model. Model parameters were determined by the genetic algorithm based objective optimization method. The predicted results agree fairly well with the experimental value.

A unified internal state variable material model for inelastic deformation and microstructure evolution in SS304

2014 ◽  
Vol 594 ◽  
pp. 352-363 ◽  
Author(s):  
R. Liu ◽  
M. Salahshoor ◽  
S.N. Melkote ◽  
T. Marusich
Keyword(s):  
Microstructure Evolution ◽  
Inelastic Deformation ◽  
Internal State ◽  
Material Model ◽  
Internal State Variable ◽  
State Variable

Study on the microstructure evolution during radial-axial ring rolling of IN718 using a unified internal state variable material model

2017 ◽  
Vol 128-129 ◽  
pp. 235-252 ◽  
Author(s):  
Xuefeng Tang ◽  
Baoyu Wang ◽  
Hua Zhang ◽  
Xiaobin Fu ◽  
Hongchao Ji
Keyword(s):  
Microstructure Evolution ◽  
Internal State ◽  
Material Model ◽  
Ring Rolling ◽  
Internal State Variable ◽  
State Variable ◽  
Axial Ring

Development of Constitutive Model of EA4T High-Speed Train Shaft Steel Based on Internal-State-Variable Method

2012 ◽  
Vol 189 ◽  
pp. 31-35 ◽  
Author(s):  
Yuan Ming Huo ◽  
Bao Yu Wang ◽  
Jian Guo Lin
Keyword(s):  
High Speed ◽  
Internal State ◽  
Optimization Technique ◽  
Equation Model ◽  
Variable Method ◽  
Internal State Variable ◽  
Model Framework ◽  
State Variable ◽  
Distribution Of Stress ◽  
Good Agreement

The internal state variable method may be the best tool，offering researcher the model framework，certainly based on physical mechanism. A constitutive equation model framework，reported in this study， has been proposed to predict the distribution of stress of EA4T steel. The constants ，arising in this model ，are determined using an evolutionary programming (EP) optimization technique . A good agreement between the computational and experimental results was found.

Modelling of microstructure evolution during hot rolling of AA5083 using an internal state variable approach integrated into an FE model

2005 ◽  
Vol 390 (1-2) ◽  
pp. 278-290 ◽  
Author(s):  
H. Ahmed ◽  
M.A. Wells ◽  
D.M. Maijer ◽  
B.J. Howes ◽  
M.R. van der Winden
Keyword(s):  
Microstructure Evolution ◽  
Hot Rolling ◽  
Internal State ◽  
Fe Model ◽  
Internal State Variable ◽  
State Variable ◽  
Variable Approach
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