3D discrete dislocation dynamic investigations of persistent slip band formation in FCC metals under cyclical deformation

Meng, Fanshi; Ferrié, Emilie; Déprés, Christophe; Fivel, M.

doi:10.1016/j.ijfatigue.2021.106234

Cited by 15 publications

(10 citation statements)

References 57 publications

(95 reference statements)

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“…The microstructural evolution and deformation behavior of alloy were studied in detail based on the crystal plasticity-based FEM [ 168 ]. Meanwhile, the deformation simulations included the prediction of stress-strain for PHSS employed by FEM approaches [ 152 , 169 ]. The inherent localization physical mechanisms of mechanical behaviors manifested by DD simulation are well illustrated from the analysis of the results, which can shed a further understanding at the dislocation level [ 169 ].…”

Section: Applications Of Multi-scale Computational Simulations and Ml...mentioning

confidence: 99%

“…Meanwhile, the deformation simulations included the prediction of stress-strain for PHSS employed by FEM approaches [ 152 , 169 ]. The inherent localization physical mechanisms of mechanical behaviors manifested by DD simulation are well illustrated from the analysis of the results, which can shed a further understanding at the dislocation level [ 169 ]. A CA algorithm was utilized to simulate the nucleation and grain growth of microstructural evolutions of PH17-4 steel during investment casting [ 170 ].…”

Section: Applications Of Multi-scale Computational Simulations and Ml...mentioning

confidence: 99%

“… Various modeling and simulation methods in materials science across multi-scales [ 167 , 168 , 169 , 170 , 171 , 172 , 173 , 174 , 175 , 176 ]. Abbreviation in the figure: Finite difference method (FDM), finite element modeling (FEM), dislocation dynamic (DD), cellular automaton (CA), microscopic phase field (MPF), microscopic dynamic modeling (MDM), Monte Carlo (MC), molecular dynamics (MD), first principles calculation (FPC).…”

Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Recent Advances on Composition-Microstructure-Properties Relationships of Precipitation Hardening Stainless Steel

et al. 2022

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Precipitation hardening stainless steels have attracted extensive interest due to their distinguished mechanical properties. However, it is necessary to further uncover the internal quantitative relationship from the traditional standpoint based on the statistical perspective. In this review, we summarize the latest research progress on the relationships among the composition, microstructure, and properties of precipitation hardened stainless steels. First, the influence of general chemical composition and its fluctuation on the microstructure and properties of PHSS are elaborated. Then, the microstructure and properties under a typical heat treatment regime are discussed, including the precipitation of B2-NiAl particles, Cu-rich clusters, Ni3Ti precipitates, and other co-existing precipitates in PHSS and the hierarchical microstructural features are presented. Next, the microstructure and properties after the selective laser melting fabricating process which act as an emerging technology compared to conventional manufacturing techniques are also enlightened. Thereafter, the development of multi-scale simulation and machine learning (ML) in material design is illustrated with typical examples and the great concerns in PHSS research are presented, with a focus on the precipitation techniques, effect of composition, and microstructure. Finally, promising directions for future precipitation hardening stainless steel development combined with multi-scale simulation and ML methods are prospected, offering extensive insight into the innovation of novel precipitation hardening stainless steels.

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Section: Applications Of Multi-scale Computational Simulations and Ml...mentioning

confidence: 99%

Section: Applications Of Multi-scale Computational Simulations and Ml...mentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Recent Advances on Composition-Microstructure-Properties Relationships of Precipitation Hardening Stainless Steel

et al. 2022

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“…Furthermore, the conventional dislocation theory is intrinsically size-independent, and thus, no characteristic length appears. This complicates the theoretical interpretation of the characteristic length of the self-organized structures of dislocation ensembles that occur spontaneously during the cyclic deformation of metals [ 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Nonsingular Stress Distribution of Edge Dislocations near Zero-Traction Boundary

2022

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Among many types of defects present in crystalline materials, dislocations are the most influential in determining the deformation process and various physical properties of the materials. However, the mathematical description of the elastic field generated around dislocations is challenging because of various theoretical difficulties, such as physically irrelevant singularities near the dislocation-core and nontrivial modulation in the spatial distribution near the material interface. As a theoretical solution to this problem, in the present study, we develop an explicit formulation for the nonsingular stress field generated by an edge dislocation near the zero-traction surface of an elastic medium. The obtained stress field is free from nonphysical divergence near the dislocation-core, as compared to classical solutions. Because of the nonsingular property, our results allow the accurate estimation of the effect of the zero-traction surface on the near-surface stress distribution, as well as its dependence on the orientation of the Burgers vector. Finally, the degree of surface-induced modulation in the stress field is evaluated using the concept of the L2-norm for function spaces and the comparison with the stress field in an infinitely large system without any surface.

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Material properties and machining characteristics under high strain rate in ultra-precision and ultra-high-speed machining process: a review

Sun

Yao

et al. 2022

Int J Adv Manuf Technol

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3D discrete dislocation dynamic investigations of persistent slip band formation in FCC metals under cyclical deformation

Cited by 15 publications

References 57 publications

Recent Advances on Composition-Microstructure-Properties Relationships of Precipitation Hardening Stainless Steel

Recent Advances on Composition-Microstructure-Properties Relationships of Precipitation Hardening Stainless Steel

Nonsingular Stress Distribution of Edge Dislocations near Zero-Traction Boundary

Material properties and machining characteristics under high strain rate in ultra-precision and ultra-high-speed machining process: a review

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