Determination of the morphological texture of the fibres in a composite material made from a textile of AISI 316L fibres using a mixed deconvolution/positivity method

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TypeArticle
Journal titleJournal of applied crystallography
ISSN0021-8898
Volume40
Pages96104; # of pages: 9
AbstractThe orientation distribution or 'morphological texture function' (MTF) of the fibres is determined from measurements of the crystallographic texture of the fibres themselves. From neutron diffraction pole-figure measurements of the fibres in the composite and X-ray diffraction pole figures of the individual fibres, the MTF is determined by a deconvolution. To account for errors in the expansion coefficients due to measurement uncertainties, the deconvolution is performed simultaneously with a positivity criterion in the form of a set of linear equations which may be solved by a least-squares method. This approach is validated using a model system of AISI 316L stainless-steel fibres in an Al-13 wt% Si eutectic casting alloy. The fibres had been spun into yarns and subsequently woven to form a textile. The composite was made by infiltrating a 'brick' containing several layers of the textile with the Al alloy. The results of the deconvolution procedure show that the method indeed yields the expected morphological texture. The so-determined MTF is resolved to an angular resolution not attainable by other methods. It also provides a very good estimate of the volume fractions of the different texture components.
Publication date
AffiliationNational Research Council Canada; NRC Canadian Neutron Beam Centre
Peer reviewedNo
Identifier10006370
NPARC number12327736
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Record identifiera5102a53-f148-4e8c-a414-60dd9499fa08
Record created2009-09-10
Record modified2016-05-09
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