Modified Fields–Backofen model for constitutive behavior of as-cast AZ31B magnesium alloy during hot deformation

Wang, Jia; Xu, Shuang; Le, Qichi; Fu, Li; Ma, Lifeng; Tang, Yan

doi:10.1016/j.matdes.2016.05.089

Cited by 55 publications

(11 citation statements)

References 38 publications

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“…The models based on Arrhenius-type constitutive equation are the most widely used phenomenological constitutive models that have been successfully used for descriptions of the flow behavior during hot deformation of alloys and metals [8,11,[21][22][23][24][25]. The constitutive equation describing the flow behavior of Ti-1023 alloy obtained by the blended elemental powder metallurgy technique was elaborated and presented in [26].…”

Section: Introductionmentioning

confidence: 99%

Application of the Strain Compensation Model and Processing Maps for Description of Hot Deformation Behavior of Metastable β Titanium Alloy

et al. 2021

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The flow behavior of metastable β titanium alloy was investigated basing on isothermal hot compression tests performed on Gleeble 3800 thermomechanical simulator at near and above β transus temperatures. The flow stress curves were obtained for deformation temperature range of 800–1100 °C and strain rate range of 0.01–100 s−1. The strain compensated constitutive model was developed using the Arrhenius-type equation. The high correlation coefficient (R) as well as low average absolute relative error (AARE) between the experimental and the calculated data confirmed a high accuracy of the developed model. The dynamic material modeling in combination with the Prasad stability criterion made it possible to generate processing maps for the investigated processing temperature, strain and strain rate ranges. The high material flow stability under investigated deformation conditions was revealed. The microstructural analysis provided additional information regarding the flow behavior and predominant deformation mechanism. It was found that dynamic recovery (DRV) was the main mechanism operating during the deformation of the investigated β titanium alloy.

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Section: Introductionmentioning

confidence: 99%

Application of the Strain Compensation Model and Processing Maps for Description of Hot Deformation Behavior of Metastable β Titanium Alloy

et al. 2021

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“…In order to fit the experimental data more accurately, a more detailed form of parameters K and s are adopted for M50NiL steel [25]. Jia et al introduce another softening factor exp(C 0 /T), presume the parameters in Equation 8as a polynomial function of strain, and describe the flow stress of as cast AZ31B alloy [34]. The study on the flow stress of magnesium alloy AZ31 [32] and AZ61 [33] at high temperature shows that the material constants K, , and can be can be assumed as…”

Section: Modified Fields-backofen (F-b) Modelmentioning

confidence: 99%

“…In order to fit the experimental data more accurately, a more detailed form of parameters K and s are adopted for M50NiL steel [25]. Jia et al introduce another softening factor ( / ) , presume the parameters in Equation 8as a polynomial function of strain, and describe the flow stress of as cast AZ31B alloy [34].…”

Section: Modified Fields-backofen (F-b) Modelmentioning

confidence: 99%

Phenomenological Constitutive Models for Hot Deformation Behavior of Ti6Al4V Alloy Manufactured by Directed Energy Deposition Laser

Niu

Sun

Wang

et al. 2020

Metals

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This work focuses on the hot deformation behavior and constitutive models of Ti6Al4V alloy manufactured by directed energy deposition laser (DEDL). The hot compression tests of DEDL Ti6Al4V alloy at deformation temperature of 700–950 °C and strain rate range of 0.001–1 s−1 were carried out. Three phenomenological models including modified Johnson–Cook model, modified Fields–Backofen model, and strain-compensated Arrhenius model were introduced to predict the flow stresses during uniaxial compression. The predictability of the three models is evaluated according to correlation coefficient, average absolute relative error, and average root mean square error. Traditional linear regression method (TLRM) and nonlinear regression analysis (NRA) were used to solve the constants of modified Johnson–Cook model and strain-compensated Arrhenius model, NRA was used to solve the constants of modified Fields–Backofen model. Compared with the TLRM, the NRA improves the accuracy of modified Johnson-Cook model, while has limited effect on that of strain-compensated Arrhenius model. The accuracy of modified Fields–Backofen model and strain-compensated Arrhenius model is higher than that of modified Johnson–Cook model.

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“…Forging, rolling, and extrusion are important hot deformation methods 7 . The deformation parameters directly affect dimensional accuracy and mechanical properties of the final products 8 . Hence, the selection and optimization of the deformation parameters such as strain rate, deformation degree, and deformation temperature are especially important 9,10 .…”

Section: Introductionmentioning

confidence: 99%

Hot deformation behavior and processing map of Mg-2Zn-1Al-0.2RE alloy

Niu

Hou

Ning

et al. 2020

Journal of Rare Earths

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Modified Fields–Backofen model for constitutive behavior of as-cast AZ31B magnesium alloy during hot deformation

Cited by 55 publications

References 38 publications

Application of the Strain Compensation Model and Processing Maps for Description of Hot Deformation Behavior of Metastable β Titanium Alloy

Application of the Strain Compensation Model and Processing Maps for Description of Hot Deformation Behavior of Metastable β Titanium Alloy

Phenomenological Constitutive Models for Hot Deformation Behavior of Ti6Al4V Alloy Manufactured by Directed Energy Deposition Laser

Hot deformation behavior and processing map of Mg-2Zn-1Al-0.2RE alloy

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