Residual stress and distortion in samples of complex geometry subjected to spray quenching

dc.contributor.authorVorster, W.J.J.
dc.contributor.authorKorsunsky, A.M.
dc.date.accessioned2015-04-28T06:16:14Z
dc.date.available2015-04-28T06:16:14Z
dc.date.issued2012
dc.description.abstractPaper presented at the 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta, 16-18 July, 2012.en_US
dc.description.abstractThis paper discusses the residual deformation modelling of a complex shaped stainless steel AISI316L component heated to 900C and quenched with a water spray subcooled to 80K. The paper shows that accurate deformation modelling of the problem necessitates not only an adequate mathematical formulation of the physical system but also the application of precise thermal and mechanical boundary conditions. Correlations of experimentally measured spatio-temporal heat transfer coefficients found valid for spray Reynolds numbers, Res  Gdd  f , of 6×10-2 < Re < 3 and spray Weber numbers, 2 s d f We  G d   , of 4.6×10-7 < We < 4.1×10-2 used in the calculation are presented. These boundary conditions are used in a finite element model (FEM) to enable predictions of the deformation history of a complex geometry subjected to spray quenching. The results of the modelling are compared to the deformed shape of the processed component. The excellent agreement between the modelling and experiment suggest that the method used to analyse this problem is consistent and may be applied to determine the residual stress and strain formation of complex shaped components subjected to a spray quench with great accuracy. The results of this study provide the opportunity to do life assessments with reliable residual stress and strain predictions which may be applied to components such as electronic chips, aluminium extrusions or metal sheet rollers.en_US
dc.description.librariandc2014en_US
dc.format.extent6 pagesen_US
dc.format.mediumPDFen_US
dc.identifier.citationVorster, WJJ & Korsunsky, AM 2012, 'Residual stress and distortion in samples of complex geometry subjected to spray quenching', Paper presented to the 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta, 16-18 July, 2012.en_US
dc.identifier.isbn9781868549863
dc.identifier.urihttp://hdl.handle.net/2263/44849
dc.language.isoenen_US
dc.publisherInternational Conference on Heat Transfer, Fluid Mechanics and Thermodynamicsen_US
dc.relation.ispartofHEFAT 2012en_US
dc.rightsUniversity of Pretoriaen_US
dc.subjectResidual deformation modellingen_US
dc.subjectComplex shaped stainless steelen_US
dc.subjectAISI316Len_US
dc.subjectQuenched with a water sprayen_US
dc.subjectMechanical boundary conditionsen_US
dc.subjectSpatio-temporal heat transfer coefficientsen_US
dc.subjectReynolds numbersen_US
dc.subjectWeber numbersen_US
dc.subjectFinite element modelen_US
dc.subjectFEMen_US
dc.subjectSpray quenchingen_US
dc.subjectStrain formationen_US
dc.subjectElectronic chipsen_US
dc.titleResidual stress and distortion in samples of complex geometry subjected to spray quenchingen_US
dc.typePresentationen_US

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