On the influence of crystal elastic moduli on computed lattice strains in AA-5182 following plastic straining

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DOIResolve DOI: http://doi.org/10.1016/S0921-5093(01)00967-4
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TypeArticle
Journal titleMaterials Science and Engineering A
Volume313
Issue1-2
Pages123144; # of pages: 22
SubjectAA-5182; Computed lattice strains; Crystal elastic moduli; Finite element; Neutron diffraction
AbstractCrystal lattice plane spacing is modified by the application of stress. The changes in spacing can be measured with neutron diffraction and used to determine the elastic strains in loaded crystals. Using finite element methods, elastic strains can be computed under loading that mimics the experiment. The quality of comparisons between the measured and computed strains depends strongly on accurate knowledge of parameters that quantify the single crystal elastic and plastic responses. For one aluminum alloy in particular, we have found that we can improve the match of lattice strains through careful choice of the single crystal elastic moduli. The parameters are selected on the basis of comparisons between the experimental results and a series of simulations in which the single crystal moduli were varied systematically. Good correspondence is obtained for a set of moduli with higher single crystal anisotropy than those of pure aluminum.
Publication date
AffiliationNational Research Council Canada; NRC Canadian Neutron Beam Centre
Peer reviewedNo
NPARC number12338018
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Record identifier9ec568e6-0b75-4ac7-a247-80ee2300b3aa
Record created2009-09-10
Record modified2016-05-09
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