Strain hardening due to deformation twinning in α-titanium: Constitutive relations and crystal-plasticity modeling

Salem, Ayman A.; Kalidindi, Surya R.; Semiatin, S. L.

doi:10.1016/j.actamat.2005.04.014

Cited by 310 publications

(148 citation statements)

References 21 publications

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“…2c). In agreement with findings in the literature [3][4][5][6][7][8][9][10]17,18], twinning seemed to be suppressed at this level of reduction. In addition, the twin boundaries were almost completely transformed into HABs with misorientations different from those associated with twinning (Fig.…”

Section: Intermediate Strainssupporting

confidence: 82%

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Grain-structure development in heavily cold-rolled alpha-titanium

D’yakonov

Mironov

Zherebtsov

et al. 2014

Materials Science and Engineering: A

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a b s t r a c tHigh-resolution electron back-scatter diffraction (EBSD) analysis was employed to establish mircostructure evolution in heavily cold-rolled alpha-titanium. After thickness reductions of 75% to 96%, significant microstructure and texture changes were documented. The surface area of high-angle grain boundaries was almost tripled, thus giving rise to an ultra-fine microstructure with a mean grain size of 0.6 μm. Moreover, orientation spread around typical 'split-basal' rolling texture substantially increased.These effects were suggested to be related to the enhancement of pyramidal 〈c þa〉 slip.

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Section: Intermediate Strainssupporting

confidence: 82%

“…4a and b). This effect was presumably associated with relatively easy slip within twinned regions [13,17,18]. The LABs were usually short, curved, and irregular in appearance.…”

Section: Low Strainsmentioning

confidence: 99%

Grain-structure development in heavily cold-rolled alpha-titanium

D’yakonov

Mironov

Zherebtsov

et al. 2014

Materials Science and Engineering: A

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“…For instance, frameworks (Thamburaja and Anand, 2001;Turteltaub and Suiker, 2005;Lan et al, 2005;Manchiraju and Anderson, 2010) have been developed to incorporate martensitic transformations as the flow rules. Mechanical twinning, which is of great importance to the plasticity of many BCC metals as well as FCC metals with low SFE, has also been incorporated into FE-CP models (Kalidindi, 1998;Staroselsky and Anand, 1998;Salem et al, 2005;Steinmetz et al, 2013;Zhang et al, 2008). Atomistically-informed dislocation-based models have also been developed recently and applied to single crystal (Cereceda et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

An integrated full-field model of concurrent plastic deformation and microstructure evolution: Application to 3D simulation of dynamic recrystallization in polycrystalline copper

Zhao

Low

Wang

et al. 2016

International Journal of Plasticity

107

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Many time-dependent deformation processes at elevated temperatures produce significant concurrent microstructure changes that can alter the mechanical properties in a profound manner. Such microstructure evolution is usually absent in mesoscale deformation models and simulations. Here we present an integrated full-field modeling scheme that couples the mechanical response with the underlying microstructure evolution. As a first demonstration, we integrate a fast Fourier transform-based elasto-viscoplastic (FFT-EVP) model with a phase-field (PF) recrystallization model, and carry out three-dimensional simulations of dynamic recrystallization (DRX) in polycrystalline copper. A physics-based coupling between FFT-EVP and PF is achieved by (1) adopting a dislocation-based constitutive model in FFT-EVP, which allows the predicted dislocation density distribution to be converted to a stored energy distribution and passed to PF, and (2) implementing a stochastic nucleation model for DRX. Calibrated with the experimental DRX stress-strain curves, the integrated model is able to deliver full-field mechanical and microstructural information, from which quantitative description and analysis of DRX can be achieved. It is suggested that the initiation of DRX occurs significantly earlier than previous predictions, due to heterogeneous deformation. DRX grains are revealed to form at both grain boundaries and junctions (e.g., quadruple junctions) and tend to grow in a wedge-like fashion to maintain a triple line (not necessarily in equilibrium) with old grains. The resulting stress redistribution due to strain compatibility is found to have a profound influence on the subsequent dislocation evolution and softening.

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“…The crystal plasticity theory is based on the theory of dislocation slipping, which mainly examines the function of slipping in plastic deformation [6]. Further, the twinning mechanism are also introduced into the crystal plasticity constitutive model by Houte [7] and Kalidindi [8] for a more precise description of the plastic deformation behaviour of some metals, such as hadifield steel [5] and -Ti [9]. In the study of crystal plasticity, most scholars focus on polycrystalline model and macroscopic mechanical behaviour, while loading experiment on Cu was performed at the temperature of 4.2 K by Niewczas [10], and the mutation phenomenon of stress appeared, which is hard to explain directly.…”

Section: Introductionmentioning

confidence: 99%

Investigate earing of TWIP steel sheet during deep-drawing process by using crystal plasticity constitutive model

Yang

Cai

Sun

et al. 2015

MATEC Web of Conferences

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Abstract. By combining the nonlinear finite element analysis techniques and crystal plasticity theory, the macroscopic mechanical behaviour of crystalline material, the texture evolution and earing-type characteristics are simulated accurately. In this work, a crystal plasticity model exhibiting deformation twinning is introduced based on crystal plasticity theory and saturation-type hardening laws for FCC metal Fe-22Mn-0.6C TWIP steel. Based on the CPFE model and parameters which have been determined for TWIP steel, a simplified finite element model for deep drawing is promoted by using crystal plasticity constitutive model. The earing characteristics in typical deep-drawing process are simulated well. Further, the drawing forces are calculated and compared to the experimental results from reference. Meanwhile, the impacts of drawing coefficient and initial texture on the earing characteristics are investigated for controlling the earing.

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Strain hardening due to deformation twinning in α-titanium: Constitutive relations and crystal-plasticity modeling

Cited by 310 publications

References 21 publications

Grain-structure development in heavily cold-rolled alpha-titanium

Grain-structure development in heavily cold-rolled alpha-titanium

An integrated full-field model of concurrent plastic deformation and microstructure evolution: Application to 3D simulation of dynamic recrystallization in polycrystalline copper

Investigate earing of TWIP steel sheet during deep-drawing process by using crystal plasticity constitutive model

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