Research on the hot tensile deformation mechanism of Ti-6Al-4 V alloy sheet based on the α + β dual phase crystal plasticity modeling

Gao, Song; Ying-li, Sun; Li, Qihan; Hao, Zhaopeng; Zhang, Bangcheng; Gu, Dongwei; Wang, Guotao

doi:10.1016/j.jallcom.2022.167701

Cited by 11 publications

(2 citation statements)

References 43 publications

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“…Crystal plasticity finite element method (CPFEM) has proved to be an effective numerical tool 23,30,35,36 for modeling microstructural features of metal alloys under various loading conditions. 18,[37][38][39] For instance, the effect of micropores on fatigue plastic deformation has been studied for dual-phase Ti-6Al-4V alloys, revealing that plastic deformation increases as the aspect ratio of the pores increases. 40 In our previous work, we systematically investigated the combined effects of microstructure and defects in alloys such as dual-phase Ti-6Al-4V.…”

Section: Introductionmentioning

confidence: 99%

“…Conversely, numerical modeling provides an alternative approach to tuning lamellar orientation in bimodal titanium alloys, offering a variety of options for advanced material design. Crystal plasticity finite element method (CPFEM) has proved to be an effective numerical tool 23,30,35,36 for modeling microstructural features of metal alloys under various loading conditions 18,37–39 . For instance, the effect of micropores on fatigue plastic deformation has been studied for dual‐phase Ti–6Al–4V alloys, revealing that plastic deformation increases as the aspect ratio of the pores increases 40 .…”

Section: Introductionmentioning

confidence: 99%

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Crystal plasticity modeling fatigue behavior in bimodal Ti–6Al–4V: Effects of microdefect and lamellar orientation

Zhao,

Tang,

Ferro

et al. 2024

Fatigue Fract Eng Mat Struct

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Investigating fatigue failure in titanium alloys is crucial for material design and engineering. Fatigue behavior in dual‐phase titanium alloys is strongly correlated with microstructural features and microdefects. This work formulates an improved modeling method to investigate fatigue behavior of bimodal Ti–6Al–4V, emphasizing the effects of lamellar orientation and microdefects. Using an improved Voronoi tessellation method, we establish representative volume element (RVE) models with various grain size distributions. Crystal plasticity finite element modeling (CPFEM) is used to analyze fatigue deformation in bimodal Ti–6Al–4V, considering microdefects and lamellar orientation. Fatigue indicator parameters are then incorporated into CPFEM to predict fatigue life and verified with experimental data. Numerical results highlight the significant influence of lamellar orientation and microdefects on fatigue behavior, with predicted life within the 3‐error band. This method efficiently overcomes challenges in quantitatively characterizing microstructural lamellae that experiments are short of, paving the way for designing fatigue‐resistant alloy materials with similar microstructures.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Crystal plasticity modeling fatigue behavior in bimodal Ti–6Al–4V: Effects of microdefect and lamellar orientation

Zhao,

Tang,

Ferro

et al. 2024

Fatigue Fract Eng Mat Struct

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Research on the Heterogeneous Deformation Behavior of Nickel Base Alloy Based on CPFEM

Liu,

You,

Zhao

et al. 2024

Cryst. Res. Technol.

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In this paper, a crystal plasticity finite element method (CPFEM), considering the grain morphology and orientation, as well as the dislocation density, is used to research the tensile deformation behavior of GH4169 based on Electron Backscatter Diffraction (EBSD). The stress, plastic strain, and dislocation density distributions are obtained for different levels of deformation. Results show that the stress, plastic strain, and dislocation density exhibit obvious heterogeneous plastic deformation, and stress concentration and dislocation pileup mainly occurs near grain boundaries. The initial dislocation density mainly affects the stress–strain curve of the material, and it can obviously effect the yield strength but cannot influence the hardening ability of the material. The total dislocation density increases with plastic strain. However, the texture evolution has no evident change with increasing plastic strain, except for the increase of texture content in Cube (001)[100].

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Experimental investigation and crystal plasticity simulation for the fatigue crack initiation of the equiaxed Ti-6Al-4V alloy in the very high cycle regime

Chen

Gao

Chen

et al. 2023

Engineering Failure Analysis

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Research on the hot tensile deformation mechanism of Ti-6Al-4 V alloy sheet based on the α + β dual phase crystal plasticity modeling

Cited by 11 publications

References 43 publications

Crystal plasticity modeling fatigue behavior in bimodal Ti–6Al–4V: Effects of microdefect and lamellar orientation

Crystal plasticity modeling fatigue behavior in bimodal Ti–6Al–4V: Effects of microdefect and lamellar orientation

Research on the Heterogeneous Deformation Behavior of Nickel Base Alloy Based on CPFEM

Experimental investigation and crystal plasticity simulation for the fatigue crack initiation of the equiaxed Ti-6Al-4V alloy in the very high cycle regime

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