Constitutive modeling and microstructure change of Ti–6Al–4V during the hot tensile deformation

Xiao, Jun; Li, D.S.; Li, X.Q.; Deng, Tongsheng

doi:10.1016/j.jallcom.2012.07.048

Cited by 90 publications

(24 citation statements)

References 20 publications

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“…The change trend of microhardness is the same with the flow stress. In publications [36,37], as for the titanium alloy, the change trend of microhardness is the same with the flow stress.…”

Section: Regions a And C Region D Is Defined As The Transition Regiomentioning

confidence: 97%

Thermo-physical simulation of the compression testing for constitutive modeling of GH4169 superalloy during linear friction welding

Yang

et al. 2016

Journal of Alloys and Compounds

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“…The change trend of microhardness is the same with the flow stress. In publications [36,37], as for the titanium alloy, the change trend of microhardness is the same with the flow stress.…”

Section: Regions a And C Region D Is Defined As The Transition Regiomentioning

confidence: 97%

Thermo-physical simulation of the compression testing for constitutive modeling of GH4169 superalloy during linear friction welding

Yang

et al. 2016

Journal of Alloys and Compounds

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“…It can be observed that the Some researchers [23][24][25][26][27] have explored the dependence of various constants of constitutive model i.e. Q, n, a and ln A as a function of strain.…”

Section: Evaluation Of Constitutive Model and Interpretation Of Constmentioning

confidence: 99%

Constitutive modeling of hot deformation behavior of vacuum hot pressed Cu–8Cr–4Nb alloy

2015

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“…Recently, the Arrhenius-type equation and their revised forms of phenomenological models were utilized to model the hot flow behaviors of many materials, such as Ti-6Al-4V 15 ,Ti60 16 , and pure titanium 17 , etc. Lin et al 18,19 and Quan et al 20 improved the initial Arrhenius-type equations by incorporating strain and some material parameters (such as structure factor A and activation energy of deformation Q) to obtain more accurate Arrhenius-type equation.…”

Section: Introductionmentioning

confidence: 99%

Numerical Description of Hot Flow Behaviors at Ti-6Al-2Zr-1Mo-1V Alloy By GA-SVR and Relative Applications

et al. 2016

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Hot compression tests of as-cast Ti-6Al-2Zr-1Mo-1V alloy in a wide temperature range of 1073-1323 K and strain rate range of 0.01-10 s-1 were conducted by a servo-hydraulic and computer-controlled Gleeble-1500 machine. The hot flow behaviors of Ti-6Al-2Zr-1Mo-1V alloy show highly non-linear relationships with strain, strain rate and temperature. In order to accurately and effectively characterize the complex flow behaviors, support vector regression (SVR) which is a machine learning method was combined with Genetic Algorithm (GA) to characterize the flow behaviors, namely, the GA-SVR. The study abilities, generation abilities, and modeling efficiencies of the improved Arrhenius-type constitutive model, ANN, and GA-SVR for flow behaviors of as-cast Ti-6Al-2Zr-1Mo-1V alloy were detailedly compared. Comparison results show that the study ability of the GA-SVR is as strong as the ANN. The generation abilities and modeling efficiencies of these models were shown as follows in ascending order: the improved Arrhenius-type constitutive model < ANN < GA-SVR. Based on the established GA-SVR, the continuously three-dimensional relationships among flow stress, temperature, strain, and strain rate were constructed, which improve the simulation accuracy and related research fields where stress-strain data play important roles.

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Constitutive modeling and microstructure change of Ti–6Al–4V during the hot tensile deformation

Cited by 90 publications

References 20 publications

Thermo-physical simulation of the compression testing for constitutive modeling of GH4169 superalloy during linear friction welding

Thermo-physical simulation of the compression testing for constitutive modeling of GH4169 superalloy during linear friction welding

Constitutive modeling of hot deformation behavior of vacuum hot pressed Cu–8Cr–4Nb alloy

Numerical Description of Hot Flow Behaviors at Ti-6Al-2Zr-1Mo-1V Alloy By GA-SVR and Relative Applications

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