A non-Schmid crystal plasticity finite element approach to multi-scale modeling of nickel-based superalloys
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In this paper, the authors developed non-Schmid crystal plasticity constitutive models at two length scales, and bridges them in a multi-scale framework, which includes two sub-grain and homogenized grain scales.About:
This article is published in Acta Materialia.The article was published on 2016-08-01 and is currently open access. It has received 48 citations till now. The article focuses on the topics: Representative elementary volume.read more
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Segregation-Assisted Plasticity in Ni-Based Superalloys
TL;DR: In this paper, the authors used high-resolution transmission electron microscopy and energy-dispersive X-ray spectroscopy to study deformation-induced planar faults in the single-crystal superalloy MD2 at 800 °C and 650 MPa.
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An efficient machine learning approach to establish structure-property linkages
TL;DR: This work proposes the use of machine learning technique, namely Gaussian process regression, with a small number of full-field simulation results to construct structure-property linkages that are accurate over a wide range of microstructures.
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Dislocation dynamics in aluminum containing θ’ phase: Atomistic simulation and continuum modeling
TL;DR: In this paper, the authors investigate the interaction of edge dislocation with θ′ phase in aluminum matrix using atomistic simulations, and show that an increase in the diameter of inclusion causes an increased in the average stresses in the system in proportion close to the square root of the diameter.
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Microstructure and Property-Based Statistically Equivalent Representative Volume Elements for Polycrystalline Ni-Based Superalloys Containing Annealing Twins
Akbar Bagri,George Weber,Jean Charles Stinville,William C. Lenthe,Tresa M. Pollock,Christopher Woodward,Somnath Ghosh +6 more
TL;DR: In this article, the authors developed a robust methodology for generating 3D statistically equivalent virtual polycrystalline microstructures (3D-SEVPM) of Ni-based superalloys.
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Microstructure and property based statistically equivalent RVEs for intragranular γ−γ' microstructures of Ni-based superalloys
TL;DR: In this paper, the authors developed statistically equivalent RVEs or SERVEs for intragranular microstructures of Ni-based superalloys, characterized by γ- γ'phase distribution, which represents an optimal computational domain to be used for micromechanical simulations for effective properties or response variables in the microstructure.
References
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Nickel-Based Superalloys for Advanced Turbine Engines: Chemistry, Microstructure and Properties
Tresa M. Pollock,Sammy Tin +1 more
TL;DR: The chemical, physical, and mechanical characteristics of nickel-based superalloys are reviewed with emphasis on the use of this class of materials within turbine engines as mentioned in this paper, and the role of major and minor alloying additions in multicomponent commercial cast and wrought super-alloys is discussed.
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Overview of constitutive laws, kinematics, homogenization and multiscale methods in crystal plasticity finite-element modeling: Theory, experiments, applications
TL;DR: In this paper, a review of continuum-based variational formulations for describing the elastic-plastic deformation of anisotropic heterogeneous crystalline matter is presented and compared with experiments.
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A theory of the anomalous yield behavior in L12 ordered alloys
TL;DR: In this paper, a functional form for the activation enthalpy of cross slip of a 12 [101] (111) dislocation has been derived using the results of recent atomistic studies of screw dislocations in L12 structures.
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Computational modelling of single crystals
Alberto M. Cuitiño,Michael Ortiz +1 more
TL;DR: In this paper, a statistical mechanical model of dislocation motion through forest dislocations is formulated, where the strength of the short-range obstacles introduced by the forest dislocations is allowed to depend on the mode of interaction.