ClusteredShrinkagePoresinIll-ConditionedAluminumAlloyDieCastings
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概要
- 論文の詳細を見る
Thegeometricfeaturesofclusteredshrinkagepores(CSP)inill-conditionedaluminumalloydiecastingswererevealedandtheireffectonthefatiguestrengthwasdiscussed.ToobtainthegeometricfeaturesofCSP,anobservationusingacommercialmicrofocusX-raycomputedtomography(X-rayCT)systemwascarriedoutandthepositionandsizeofCSPwereconfirmed.However,thedetailedgeometryoftheCSPcouldnotbeclearlyobservedbyX-rayCT,becauseeachporeintheCSPwastoosmalltoobserveowingtotheinsufficientresolutionoftheCTimage.Wedevelopedaserialsectioningsystemwithapolishingmachineandanopticalmicroscope.ObservationusingtheserialsectioningsystemclearlyshowedthataCSPconsistsofmanyinterconnectedsmallpores,whichformedanextremelycomplicatedshape.TheCSPwasthoughttogrowfromrelativelylargegaspores,whichconnecttosmallporesandconsequentlygenerateacavitywithahugevolumeandacomplicatedgeometry.ThecomplexgeometryofCSPresultedintheconcentrationofstressaroundCSP,andsignificantlyunderminesmechanicalpropertiessuchastensilestrengthandfatiguestrength.
- 2010-09-01
著者
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Yano Takayuki
Department Of Mechanical System Engineering Graduate School Of Engineering Gunma University
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Yano Takayuki
Department Of Applied Chemistry Graduate School Of Engineering Osaka Prefecture University
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Murata Yozo
Department Of Mechanical System Engineering Graduate School Of Engineering Gunma University
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UTSUNOMIYA Takao
Research Organization for Advanced Engineering, Shibaura Institute of Technology
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HANGAI Yoshihiko
Department of Mechanical System Engineering, Graduate School of Engineering, Gunma University
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YOSHIKAWA Nobuhiro
Institute of Industrial Science, The University of Tokyo
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Kuwazuru Osamu
Department Of Nuclear Power And Energy Safety Graduate School Of Engineering University Of Fukui
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KITAHARA Soichiro
Gundai Co., Ltd.
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BIDHAR Sujit
Institute of Industrial Science, The University of Tokyo
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Utsunomiya Takao
Research Organization For Advanced Engineering Shibaura Institute Of Technology
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Kitahara Soichiro
Gundai Co. Ltd.
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Bidhar Sujit
Institute Of Industrial Science The University Of Tokyo
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Yoshikawa Nobuhiro
Institute Of Industrial Science The University Of Tokyo
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Hangai Yoshihiko
Department Of Mechanical System Engineering Graduate School Of Engineering Gunma University
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Hangai Yoshihiko
Department Of Mechanical System Engineering Faculty Of Engineering Gunma University
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- ClusteredShrinkagePoresinIll-ConditionedAluminumAlloyDieCastings
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