2012
DOI: 10.1080/14786435.2011.634855
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Crystal plasticity-based constitutive modelling of irradiated bcc structures

Abstract: A constitutive crystal plasticity model is proposed and developed for the inelastic deformation of irradiated bcc ferritic/martensitic steels. Defects found in these irradiated materials are used as substructure variables in the model. Insights from lower length-and time-scale simulations are used to frame the kinematic and substructure evolution relations of the governing deformation mechanisms. Models for evolution of mobile and immobile dislocations, as well as interstitial loops (formed due to irradiation)… Show more

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Cited by 94 publications
(60 citation statements)
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(82 reference statements)
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“…Several examples of these type of simulations exist in the literature for bcc Fe Rodney et al, 2001;Chaussidon et al, 2008;Novokshanov and Roberts, 2009;Li et al, 2011), although the total strains available from those DD calculations are only a few tenths of a percent and, thus, not representative of the material flow stress behavior. 1 Linkage with more homogenized models is thus necessary to achieve experimentally relevant plastic strains, as shown by, e.g., Odette and Frey (1979), Krishna andDe (2011), Li et al (2011), and Patra and McDowell (2012).…”
Section: Modeling Approachmentioning
confidence: 96%
“…Several examples of these type of simulations exist in the literature for bcc Fe Rodney et al, 2001;Chaussidon et al, 2008;Novokshanov and Roberts, 2009;Li et al, 2011), although the total strains available from those DD calculations are only a few tenths of a percent and, thus, not representative of the material flow stress behavior. 1 Linkage with more homogenized models is thus necessary to achieve experimentally relevant plastic strains, as shown by, e.g., Odette and Frey (1979), Krishna andDe (2011), Li et al (2011), and Patra and McDowell (2012).…”
Section: Modeling Approachmentioning
confidence: 96%
“…The theoretical study of the irradiation effect on mechanical behaviors of metals without nanotwins has been developed in recent years (Krishna et al, 2010;Patra and McDowell, 2012;Barton et al, 2013;Rahul and De, 2014;Xiao et al, 2015a,b). For instance, a Jacobian-free multiscale model was recently proposed to consider both the irradiation-induced hardening and intra-granular softening for irradiated polycrystalline FCC metals (Rahul and De, 2014).…”
Section: Accepted Manuscriptmentioning
confidence: 98%
“…Besides experiments and computational simulations, theoretical modelling has always been an important way to study the irradiation effect on metallic behaviours [26][27][28][29][30][31]. For instance, Krishna et al [27] formulated a continuum crystal plasticity model to account for defect annihilation for polycrystalline copper under neutron irradiation, and can capture the inhomogeneous plasticity deformation.…”
mentioning
confidence: 99%
“…For instance, Krishna et al [27] formulated a continuum crystal plasticity model to account for defect annihilation for polycrystalline copper under neutron irradiation, and can capture the inhomogeneous plasticity deformation. Patra et al [29] presented a micromechanics-based model to simulate the plasticity behaviours of irradiated body-centred cubic (BCC) metals, and the evolutions of both immobile, mobile dislocations and irradiation-induced defects were all involved. To simulate the plastic flow localization in defect-free channels, Xiao et al [31] proposed a tensorial plasticity model for irradiated FCC metals, and the spatial-dependent interaction between the slip dislocations and irradiated-induced SFTs could be effectively considered.…”
mentioning
confidence: 99%