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金属学报(英文版) 1998
LOW CYCLE FATIGUE AND DEFORMATION BEHAVIOR IN AN 8090 Al-Li ALLOYKeywords: Al-Li alloy,low cycle fatigue,aged condition Abstract: 1.IntroductionAl-Liall0ysrepresentanewclass0flightweight,highmodulusandhighstrengtheconomica1structuralmaterials.Theref0re,theseall0ysareespeciallyattractivet0aero-nauticalandaer0spaceindustries.Tensilepr0pertiesandfracturet0ughnessinAl-Liall0ysaswellaseffectofprecipitates0nthemhavebeenextensivelyinvestigated1w7].Fatiguefracture0fmaterialsacc0untsf0rthemaj0rity0fin-servicefailureinengineeringc0mpo-nents,andl0wcyclefatiguebehaviorisimportantforlifetimepredicti0ninpracticalalloys-Severalresea…
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