Crystal Plasticity Modeling of Void Growth on Grain Boundaries in Ni-Based Superalloys

Chen, Tianju; Sakidja, Ridwan; Ching, W. Y.; Zhou, Caizhi

doi:10.1007/s11837-019-03694-3

Cited by 10 publications

(5 citation statements)

References 29 publications

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“…[19][20][21] In the works of Asim et al, [22,23] they have investigated the void growth in a dual-phase Ti alloy at the interface of dissimilar α-β crystals. Chen et al [24] have analyzed the void growth on grain boundaries in Ni-based superalloys. In the recent work of Diehl et al, [20] the damage around a void was comprehensively studied by a coupled CP-phase field fracture approach.…”

Section: Introductionmentioning

confidence: 99%

Influence of Pore Characteristics on Anisotropic Mechanical Behavior of Laser Powder Bed Fusion–Manufactured Metal by Micromechanical Modeling

et al. 2020

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In recent times, additive manufacturing (AM) has proven to be an indispensable technique for processing complex 3D parts because of the versatility and ease of fabrication it offers. However, the generated microstructures show a high degree of complexity due to the complex solidification process of the melt pool. In this study, micromechanical modeling is applied to gain deeper insight into the influence of defects on plasticity and damage of 316L stainless steel specimens produced by a laser powder bed fusion (L‐PBF) process. With the statistical data obtained from microstructure characterization, the complex AM microstructures are modeled by a synthetic microstructure generation tool. A damage model in combination with an element deletion technique is implemented into a nonlocal crystal plasticity model to describe anisotropic mechanical behavior, including damage evolution. The element deletion technique is applied to effectively model the growth and coalescence of microstructural pores as described by a damage parameter. Numerical simulations show that the shape of the pores not only affects the yielding and hardening behavior but also influences the porosity evolution itself.

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Section: Introductionmentioning

confidence: 99%

Influence of Pore Characteristics on Anisotropic Mechanical Behavior of Laser Powder Bed Fusion–Manufactured Metal by Micromechanical Modeling

et al. 2020

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“…The Ling et al [24] CP-FE results indicate the same trends in the cases of the [100], [101], and [100]-oriented crystals, but the void in the [210]-oriented crystals grew at a slower rate at both triaxialities reported [24], although they have a higher exponent (n=15) and the hardening rule differs. Other CP-FE simulations, such as those by Asim et al [26] and Chen et al [27] also show that soft grains appear to have faster void growth.…”

Section: Voids In Single Crystals Comparisons Between Cp-fe and Dvp-fftmentioning

confidence: 88%

“…Concurrently, FE-based cell calculations have been used extensively, either in purely numerical studies, or for validation and calibration of analytical dilatational plasticity models, including the study of void growth in single crystals [21][22][23][24][25]. A number of similar studies conduct simulations on single crystals and a singular void at a grain boundary or triple junction [26,27]. These integrated dilatational/single crystal plasticity analyses and numerical calculations showed that the directionality of the plastic response of the single crystal strongly affect void growth.…”

Section: Introductionmentioning

confidence: 99%

Role of crystallographic orientation on intragranular void growth in polycrystalline FCC materials

Christodoulou

Dancette

Lebensohn

et al. 2021

International Journal of Plasticity

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“…Unlike the macroscopic continuum model, the crystal plasticity model accounts for microscopic features such as grain size, orientation, and morphology. This model can accurately predict effects related to grain size, texture evolution, and micropore growth in metallic materials [6][7][8]. In recent years, numerous grain-level fatigue studies using the crystal plasticity finite element method have been conducted [9,10].…”

Section: Introductionmentioning

confidence: 99%

Effect of microstructural features on the fatigue behavior of the valve mechanism cam rolling contact

Su,

Wang,

Deng

et al. 2024

Mater. Res. Express

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This study introduces a methodology that incorporates gradient structural features and crystal plasticity for assessing contact fatigue in engine valve cams. It explored the influence of grain characteristics and structural gradients on fatigue failure through the lens of Plastic Strain Energy Density (PSED). Findings indicate that variability in crystal orientation significantly impacts PSED and subsequent crack initiation. Additionally, shot peening induces a gradient in grain size, promoting orderly deformation, stress alleviation, and improved fatigue resistance. The study suggests that an optimal fatigue resistance in cam contacts is achievable with a gradient layer comprising 75% volume fraction, which strikes a balance between cost and technical feasibility.

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Crystal Plasticity Modeling of Void Growth on Grain Boundaries in Ni-Based Superalloys

Cited by 10 publications

References 29 publications

Influence of Pore Characteristics on Anisotropic Mechanical Behavior of Laser Powder Bed Fusion–Manufactured Metal by Micromechanical Modeling

Influence of Pore Characteristics on Anisotropic Mechanical Behavior of Laser Powder Bed Fusion–Manufactured Metal by Micromechanical Modeling

Role of crystallographic orientation on intragranular void growth in polycrystalline FCC materials

Effect of microstructural features on the fatigue behavior of the valve mechanism cam rolling contact

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