Modelling of microstructural effects on the mechanical behavior of ultrafine-grained Nickel using crystal plasticity finite element model

Phan, Van-Tung; Nguyen, Thê-Duong; Bui, Quang‐Hien; Dirras, G.

doi:10.1016/j.ijengsci.2015.03.008

Cited by 16 publications

(6 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A grain size effect will be introduced at the scale of individual slip systems by introducing a Hall-Petch type, size-dependent, hardening term in r s . This is a simple but rather common approach [25,37,38], which is computationally-efficient and therefore applicable to the analysis of polycrystals with large numbers of grains. In contrast, approaches based on the mechanics of generalized continua, such as Cosserat, micromorphic or gradient-plasticity modellings [39,40,41,42], introduce supplementary degrees of freedom and remain delicate to use with polycrystals with large numbers of grains.…”

Section: Crystal Behaviormentioning

confidence: 99%

A full-field crystal-plasticity analysis of bimodal polycrystals

Flipon

Keller

Quey

et al. 2020

International Journal of Solids and Structures

View full text Add to dashboard Cite

A full field crystal plasticity modelling of bimodal polycrystals is presented. Bimodal polycrystals are generated using a controlled Laguerre-Voronoi algorithm and a modified phenomenological law is used to take into account the grain size effect through a Hall-Petch term. A focus is particularly made on the effects of grain size and of grain size ratio between ultrafine grains and coarse grains populations on local and global mechanical responses. The effect of the spatial distribution of the coarse grains (clustered or isolated) is also analysed in terms of strain localisation and stress concentration at the local scale.

show abstract

Section: Crystal Behaviormentioning

confidence: 99%

A full-field crystal-plasticity analysis of bimodal polycrystals

Flipon

Keller

Quey

et al. 2020

International Journal of Solids and Structures

View full text Add to dashboard Cite

show abstract

“…The modeling framework described in [167] builds a full-field CPFEM model for the response of HIP and SPS processed ultra-fine-grained nickel. The model incorporates the experimentallymeasured microstructure, including grain morphology and texture as measured through EBSD.…”

Section: Models Targeting Flow Curve Predictionsmentioning

confidence: 99%

“…The final model predicts the macroscale, experimentally-observed Hall-Petch effect starting from a microstructural Hall-Petch model. The HIP data used in [167] comes from an earlier study by one of the authors [168]. This earlier work develops a simpler self-consistent viscoplastic model for the HIP material flow curves.…”

Section: Models Targeting Flow Curve Predictionsmentioning

confidence: 99%

Survey of Modeling and Simulation Techniques for Advanced Manufacturing Technologies Volume II – Predicting Material Performance from Material Microstructure

Nicolas¹,

Paulson²,

Messner³

2020

View full text Add to dashboard Cite

This report describes the current state of modeling and simulation techniques for predicting the properties of materials fabricated with advanced manufacturing techniques, given the initial microstructure of the material. The report includes a literature survey and a gap analysis outlining and prioritizing key issues in applying these modeling and simulation techniques to nuclear reactor structural materials. The discussion covers both physics-based and data-driven modeling techniques and includes a broad range of manufacturing techniques and materials that may have future nuclear applications. This report is the second in a two-part series, with the first report covering modeling and simulation methods for predicting the initial, as-manufactured structure of advanced manufacturing materials, given a description of the process. Both reports focus on a set of manufacturing technologies likely to be applied to reactor structural components. Taken together, the two reports provide a complete summary of the current state of processing-structure-properties models for advanced manufacturing as well as a survey of applications to reactor structural materials.v

show abstract

“…For the modeling of the global and local mechanical behaviors of polycrystalline metals in a wide range of temperature or strain rate-with polycrystalline models, such as Taylor [1][2][3] or selfconsistent models [4][5][6], with Finite Element (FE) codes [7][8][9][10], or with multiscale approaches coupling discrete dislocations dynamic approaches with FE codes [11,12]-it is quite usual to use a rate-dependent crystalline constitutive law, which generally takes the form of the following power law expressed on the slip system s…”

Section: Introductionmentioning

confidence: 99%