Neutron-diffraction measurement of the evolution of strain for non-uniform plastic deformation

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DOIResolve DOI: http://doi.org/10.1007/s003390201908
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TypeArticle
Journal titleApplied Physics A : Materials Science & Processing
Volume74
IssueSupplement 1
Pagess1725s1727; # of pages: 3
AbstractNeutrons are particularly adept for the validation of modeling predictions of stress and strain. In recent years, there has been a significant effort to model the evolution of both the macroscopic stresses and the intergranular stress during plastic deformation. These have had broad implications with regard to understanding the evolution of residual stress and to diffraction-based measurements of strain. Generally the modeling and associated measurements have been performed for simple uniaxial tension, leaving questions with regard to plastic deformation under multi-axial stress and non-uniform stress. Extensive measurements of the strain profile across a plastic hinge for each of a series of loading and unloading cycles to progressively higher degrees of plastic deformation are presented. These measurements are used to assess multiple-length-scale finite-element modeling (FEM) of the plastic hinge, in which the elements will range in size from single crystallites (as used in successful simulations of uniaxial tension) to macroscopic elements (as typically used in FEM simulations).
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Canadian Neutron Beam Centre
Peer reviewedNo
NPARC number12338272
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Record identifier9b2492f9-d60b-4c22-b157-5bc32884881b
Record created2009-09-10
Record modified2016-05-09
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