Microstructure, cracking behavior and mechanical properties of René 104 superalloy fabricated by selective laser melting

Bing, Wei; Liu, Zuming; Nong, Bizhong; Cao, Bin; Lv, Xueqian; Ai, Yongkang

doi:10.1016/j.jallcom.2020.158377

Cited by 31 publications

(2 citation statements)

References 50 publications

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“…In other words, fatigue crack initiation and fatigue crack propagation are treated separately by coupling dissimilar mathematical systems under the framework of traditional continuum theory. The final fatigue fracture mechanisms are associated with grain boundaries, dislocations, microcracks, anisotropy, etc [26][27][28][29][30]. Each of which plays an important role at a specific length scale.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Multiple Fatigue Cracks for Aircraft Wing Corner Box Based on Non-ordinary Sate Peridynamics

Han¹,

Wang²,

Zhao³

et al. 2022

Preprint

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In this work, we have developed a non-ordinary state-based peridynamic model for multiple crack initiation and propagation due to compression-compression fatigue load. In each loading cycle, the fatigue loading is redistributed among the peridynamic solid body, leading to the progressive fatigue damage initiation and propagation in an autonomous fashion. The proposed fatigue model parameters are firstly validated by 3D numerical benchmark tests, and then it is applied to simulate widespread fatigue damage evolution of the aircraft wing corner box. The modified constitutive damage model has been implemented into the peridynamics framework at finite strain. Furthermore, the criterion algorithm from multiple initiation to propagation is discussed. It is shown that the numerical results obtained from peridynamics simulations are in general agreement with those from the experiment data. The comparison of experimental and numerical results indicates that the proposed non-ordinary state-based peridynamics fatigue model has the ability to capture the multiple crack initiation and propagation and other features of the aluminium alloy material.

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Section: Introductionmentioning

confidence: 99%

Modeling of Multiple Fatigue Cracks for Aircraft Wing Corner Box Based on Non-ordinary Sate Peridynamics

Han¹,

Wang²,

Zhao³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…In other words, fatigue crack formation and expansion use a single-handed treatment scheme coupling dissimilar mathematical systems under the framework of traditional continuum theory. The whole process of fatigue fracture is directly controlled by dislocations and grain boundary, where the microcracks are a priority to initiate in those locations [33][34][35][36][37]. It crosses space and time scales from small cracks to macroscopically visible cracks.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Multiple Fatigue Cracks for the Aircraft Wing Corner Box Based on Non-ordinary State-based Peridynamics

Han

Wang²,

Zhao

et al. 2022

Metals

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In the current research, we propose a novel non-ordinary state-based peridynamics (PD) fatigue model for multiple cracks’ initiation and growth under tension–tension fatigue load. In each loading cycle, the fatigue loading is redistributed throughout the peridynamic solid body, leading to progressive fatigue damage formation and expansion in an autonomous fashion. The proposed fatigue model parameters are first verified by a 3D numerical solution, and then, the novel model is used to depict the widespread fatigue damage evolution of the aircraft wing corner box. The modified constitutive damage model has been implemented into the peridynamic framework. Furthermore, the criteria and processes from multiple initiations to propagation are discussed in detail. It was found that the computational results obtained from the PD fatigue model were consistent with those from the test data. The angular errors of multiple cracks are within 2.66% and the number of cycles errors are within 15%. A comparison of test data and computational results indicates that the fatigue model can successfully capture multiple crack formations and propagation, and other behaviors of aluminum alloy material.

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Effect of hafnium and tantalum on the microstructure of PM Ni-based superalloys

Zhang

Bai

et al. 2022

J Mater Sci

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Microstructure, cracking behavior and mechanical properties of René 104 superalloy fabricated by selective laser melting

Cited by 31 publications

References 50 publications

Modeling of Multiple Fatigue Cracks for Aircraft Wing Corner Box Based on Non-ordinary Sate Peridynamics

Modeling of Multiple Fatigue Cracks for Aircraft Wing Corner Box Based on Non-ordinary Sate Peridynamics

Modeling of Multiple Fatigue Cracks for the Aircraft Wing Corner Box Based on Non-ordinary State-based Peridynamics

Effect of hafnium and tantalum on the microstructure of PM Ni-based superalloys

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