6005铝合金的过烧温度及其组织特征

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392011Vol.39№42010-09-201973-。60051211.7300502.7481116005。600℃、、、607℃6005610℃、、6005。TG166.3A1007-7235201104-0039-04Overheatingtemperatureandmicrostructurecharacteristicsof6005aluminumalloyZHANGDa-xin12YANGRui-cheng11.CollegeofMaterialsandEngineeringLanzhouUniversityofScienceandTechnologyLanzhou730050China2.ChalcoNorthwestAluminumBranchLongxi748111ChinaAbstractThe6005aluminumalloymicrostructurespecimensselectedfromcastbilletandextrudedproductshavebeeninvestigatedbymicroscope.Thespecimenshavebeensolutionheatedatdeferenttemperatures.Thespecimenshavebeenheatedat600℃andetchedinmixedacidsolutebeforeinvestigation.Theinvestigationresultsshowthatthecompoundsbe-comeroundandaccumulate.Thegrainsgrow.Thegrainboundarytendstostraight.Itindi-catesthatthetemperatureistoohighanddidnotyetreachtooverheat.Alittleoftypicaloverheatcharacteristicsappearedinthespecimensbeingheatedat607℃.Itmeansthisisthestartingtemperatureofoverheatfor6005aluminumalloy.Themicrostructurespecimensbeingheatedat610℃showtypicaloverheatingfeaturessuchasre-melteutecticballsspindle-shapestructuresatthegrainboundarythecoarsegrainboundaryandre-melttrianglegrainboundary.Allthefeaturesshowthat6005aluminumalloyhasbeenoverheatedseriouslyatthistemperature.Keywordstemperaturemicrostructureoverheating6005Al-Mg-Si402011Vol.39№4。。。、、1-4。。6005。11600511。1600516005%SiFeCuMnMgZnTiNiAl0.780.150.0020.0030.520.0040.020.0032RJX-15-9UJ36、。2HF+3HCl+5HNO3+190H2ONeophot。22.1、6005600℃、、、26005。26005600℃412011Vol.39№4607℃600536005。36005607℃610℃、、4。T46005179.5N/mm2172.2N/mm2HB77.954.8。46005610℃618℃、5。610℃、618℃6005。56005618℃422011Vol.39№42.2。6005Al-Mg-SiαAl、Mg2Si、WAlXCuMg5Si4Al-Mg-SiMg2SiMg2Si。Al-Mg2SiMg2Si1.85%。MgSi。60056005。2.360056005、、、。。———。。。、。6005。。6005。36005607℃。609℃。1.M.20051140-1143.2.6020-T8J.2008628-30.3《》.M.197939-45.4《》.M.1975122-125.1414HUANGSTSAIHLINS.Effectofbrazingrouteandbrazingalloyontheinterfacialstructurebetweendia-mondandbondingmatrixJ.MaterialsChemistryandPhysics2004103251-25.15.M.1991.16.M.1998.17.J.200630133-136.18.J.2004910-13.

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