Quantification of residual strain associated with reduction of hot tears by grain refinement in B206 aluminium alloy

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DOIResolve DOI: http://doi.org/10.1179/1879139513Y.0000000119
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TypeArticle
Journal titleCanadian Metallurgical Quarterly
ISSN0008-4433
Volume53
Issue2
Pages151159; # of pages: 9
SubjectGrain refinement; Neutron diffraction; Hot tearing; B206 aluminium alloy; Residual strain
AbstractHot tearing continues to limit the industrial use of many aluminium casting alloys. The hot tearing susceptibility of an alloy is influenced by microstructure, solidification rate and the stress/strain conditions it experiences during solidification. In this study, a novel technique was used to quantify the residual strain associated with hot tearing in B206 aluminium alloy. Neutron diffraction strain mapping was carried out on three B206 castings with varying levels of titanium (i.e. unrefined, 0·02 and 0·05 wt-%). Titanium additions were effective in causing grain refinement of the alloy and eliminating hot tears. Neutron diffraction strain mapping was successfully used to demonstrate more uniform distribution of strain in the casting, resulting from grain refinement with consequent higher resistance to hot tearing.
Publication date
LanguageEnglish
AffiliationSecurity and Disruptive Technologies; National Research Council Canada
Peer reviewedYes
NPARC number21274135
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Record identifier0a428feb-3821-4fa7-8c56-de20fdcedc37
Record created2015-02-17
Record modified2016-05-09
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