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1、High-temperaturealloyCLASS:NAME:2021年9月10日本科毕业设计答辩ContentsThedefinitionanddevelopmentofhigh-temperaturealloyCharacteristicsandClassificationofhigh-temperaturealloyTheperformancerequirementsofhigh-temperaturealloyWaysofimprovingthe performanceof high-temperature alloyAppl
2、icationandFutureofhigh-temperaturealloyThedefinitionanddevelopmentofhigh-temperaturealloyHigh-temperaturealloyisakindofmetalmaterialwhichcanworknormallyunderthehightemperatureof600~1200℃.Forthisreason,wealsocallitsuperalloy.Withthedevelopmentoftheaviationindustryandtheme
3、chanicalprocessingindustry,weneedsomematerialsthatcanworknormallyunderthehightemperature,sohigh-temperaturealloyappearedanddevelopedrapidlysinceabouteightyyearsago.Nowithasalargenumberofspeciesandcanmeetvariousrequirementsintheindustry.Inthefuture,webelievehigh-temperatu
4、realloywillhavebetterdevelopmentandbrighterprospect.CharacteristicsandClassificationofhigh-temperaturealloyHigh-temperaturealloyIronbasesuperalloyCobaltbasesuperalloyNickelbasesuperalloy70℃1200℃DirectionallysolidifiedsuperalloyMolybdenumbasealloysChromiumbasedsuperalloys
5、Tungstenbase superalloysTheperformancerequirementsofhigh-temperaturealloyThemechanicalpropertiesathightemperatures①Endurancestrength②Thermalfatigue③Relaxation④Creep2.CorrosionresistanceathightemperaturesItincludesantioxidation,anti-sulfidation,anti-nitriding,anti-carbona
6、tion,corrosionresistanceandsoon.Waysofimprovingthe performanceof high-temperature alloyStructurestrengthening①solidsolutionstrengthening②precipitationstrengthening③grainboundarystrengthening2.Processintensification①powdermetallurgy②directionalsolidification③rapidsolidif
7、icationApplicationandFutureofhigh-temperaturealloyHigh-temperaturealloyiswidelyusedinengine,forexample,aircraftengine,rocketengine,andgasturbineengine.Itisalsousedinotherfields,nuclearindustry,metallurgicalindustry,petrochemical,coalgasificationandsoon.Sosuperalloyisvery
8、importantfortheheavyindustryandindustrialupgrading.Inthefuture,todevelopnewsuperalloyandbreakthroughthe
