Multiaxial and non-proportional loading responses, anisotropy and modeling of Ti–6Al–4V titanium alloy over wide ranges of strain rates and temperatures

Khan, Akhtar S.; Kazmi, Rehan; Farrokh, Babak

doi:10.1016/j.ijplas.2006.08.006

Cited by 177 publications

(60 citation statements)

References 34 publications

(51 reference statements)

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“…The orthotropic yield criterion of Eq. 15 was shown to exhibit accuracy in describing the yield loci of magnesium [74] and titanium alloys [74,163]. Additional linear transformations can be incorporated into the isotropic criterion (14) for an improved representation of the anisotropy (see Plunkett et al.…”

Section: Classical Anisotropic Yield Functionsmentioning

confidence: 99%

Advances in anisotropy and formability

et al. 2010

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This paper presents synthetically the most recent models for description of the anisotropic plastic behavior. The first section gives an overview of the classical models. Further, the discussion is focused on the anisotropic formulations developed on the basis of the theories of linear transformations and tensor representations, respectively. Those models are applied to different types of materials: body centered, faced centered and hexagonalclose packed metals. A brief review of the experimental methods used for characterizing and modeling the anisotropic plastic behavior of metallic sheets and tubes under biaxial loading is presented together with the models and methods developed for predicting and establishing the limit strains. The capabilities of some commercial programs specially designed for the computation of forming limit curves (FLC) are also analyzed.

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Section: Classical Anisotropic Yield Functionsmentioning

confidence: 99%

Advances in anisotropy and formability

et al. 2010

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“…The proposed criterion was verified with the use of experimental data on Ti-6Al-4V titanium alloy given by Khan et al [16]. The value of the function of the stiffness distributor κ = 0,71254 for an average value of Poisson's ratio for Ti-6Al-4V alloy ν = 0,342 corresponds with the ratio of Young moduli along the rolling direction and along the transverse one E 1 /E 2 = 1,100.…”

Section: Experimental Verificationmentioning

confidence: 73%

Energy-Based Yield Criteria for Orthotropic Materials, Exhibiting Strength-Differential Effect. Specification for Sheets under Plane Stress State

Szeptyński

2017

Archives of Metallurgy and Materials

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A general proposition of an energy-based limit condition for anisotropic materials exhibiting strength-differential effect (SDE) based on spectral decomposition of elasticity tensors and the use of scaling pressure-dependent functions is specified for the case of orthotropic materials. A detailed algorithm (based on classical solutions of cubic equations) for the determination of elastic eigenstates and eigenvalues of the orthotropic stiffness tensor is presented. A yield condition is formulated for both two-dimensional and three-dimensional cases. Explicit formulas based on simple strength tests are derived for parameters of criterion in the plane case. The application of both criteria for the description of yielding and plastic deformation of metal sheets is discussed in detail. The plane case criterion is verified with experimental results from the literature.

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“…KHL model (Khan and Liang [23]; Khan et al [24]; Khan et al [25]) was used to model the experimental response of these materials. The KHL model is as follows:…”

Section: Constitutive Model and Theoretical Analysismentioning

confidence: 99%

Effect of Manufacturing Processes and Welding Type on Quasi-static and Dynamic Responses of Aluminum Alloys: Experiments and Modeling

Baig

Khan

Choi

et al. 2015

J. dynamic behavior mater.

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Measured responses of two aluminum alloys over a wide range of strain-rates (10 -5 to 10 3 s -1 ) and temperatures are presented. The aluminum alloys include AA5182-O and AL6111-T4. A tensile spilt Hopkinson pressure bar was used for the dynamic experiments. The aluminum AA5182-O alloy (manufactured using continuous casting and direct chilling processes) including its first and second generation gas tungsten arc welded and friction stir welded TWB's exhibited negative strain-rate sensitivity. AL6111-T4 is found to have positive strain-rate sensitivity. The Khan-Huang-Liang constitutive model is shown to correlate and predict the observed responses reasonably well. The texture evolution of the AA5182-O and AL6111-T4 sheets during uniaxial tension is investigated using the EBSD technique and full-constraint polycrystal model. It is observed through the EBSD analysis that, the stable orientation is strongly dependent on the initial texture components.Keywords AA5182-O Á AL6111-T4 Á Quasi-static and dynamic response Á Tensile split Hopkinson bar Á EBSD

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Multiaxial and non-proportional loading responses, anisotropy and modeling of Ti–6Al–4V titanium alloy over wide ranges of strain rates and temperatures

Cited by 177 publications

References 34 publications

Advances in anisotropy and formability

Advances in anisotropy and formability

Energy-Based Yield Criteria for Orthotropic Materials, Exhibiting Strength-Differential Effect. Specification for Sheets under Plane Stress State

Effect of Manufacturing Processes and Welding Type on Quasi-static and Dynamic Responses of Aluminum Alloys: Experiments and Modeling

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