Crack initiation mechanisms in Ti-6Al-4V subjected to cold dwell-fatigue, low-cycle fatigue and high-cycle fatigue loadings

Lavogiez, C.; Dureau, C.; Nadot, Y.; Villechaise, Patrick; Hémery, S.

doi:10.1016/j.actamat.2022.118560

Cited by 31 publications

(3 citation statements)

References 51 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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“…While plastic deformation still occurs in LCF, the strain amplitudes are generally lower than those associated with ULCF. This means that the plastic deformation that occurs in the material during LCF is typically less severe than that observed in ULCF [8][9][10][11]. The fracture initiation and propagation zones of ordinary fatigue fracture are mainly characterized by transgranular cleavage, showing characteristics similar to brittle fracture; the fracture of ULCF has a large number of deep dimples, showing characteristics of ductile fracture (Figure 3) [12].…”

Section: Introductionmentioning

confidence: 99%

Ultra-Low Cycle Fatigue Life Prediction Model—A Review

Zhang

et al. 2023

Metals

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This article is a review of models for predicting ultra-low cycle fatigue life. In the article, the life prediction models are divided into three types: (1) microscopic ductile fracture models based on cavity growth and cavity merger; (2) fracture models based on porous plasticity; and (3) ductile fracture models based on continuum damage mechanics. Furthermore, the article provides a critical assessment of the current state of research on ultra-low cycle fatigue life prediction models, highlighting the limitations and challenges faced by each model type. Ultimately, this review aims to provide a comprehensive overview of the different models available for predicting ultra-low cycle fatigue life and to guide future research in this important area of materials science and engineering.

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Microtexture Evolution of Titanium Alloy During Hot Deformation: For Better Understanding the Role of Primary α Grains

Zhao

Zhang

Wang

et al. 2023

Metall Mater Trans A

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Crack initiation mechanisms in Ti-6Al-4V subjected to cold dwell-fatigue, low-cycle fatigue and high-cycle fatigue loadings

Cited by 31 publications

References 51 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

Ultra-Low Cycle Fatigue Life Prediction Model—A Review

Microtexture Evolution of Titanium Alloy During Hot Deformation: For Better Understanding the Role of Primary α Grains

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