INVESTIGATION ON LCF PROPERTIES OF Ti2Al2 5Zr ALLOY TUBE AND ROD

被引：0
|
作者：
Z.T.Yu1
机构：
来源：
Acta Metallurgica Sinica(English Letters) | 1999年 / 04期
关键词：
Ti; 2; Al; 5; Zralloy; low cyclefatigue properties; fracturefeatures;
D O I：
暂无
中图分类号：
TG13 [合金学与各种性质合金];
学科分类号：
080502 ;
摘要：
Thelow cyclefatigue( LCF) propertiesof Ti 2 Al 2 5 Zralloytubeand rod specimens weredetermined at R.T. Thestress～strain curve equation under cyclic and monotonicloading andtherelation of totalstrain vsfatiguelife of Ti 2 Al 2 5Zr alloy were established. Theeffectsofstrain ratio R,strain amplitudeεaandspecimenshapeoncyclicdeformingbehavior and fatigueproperties were analyzed . The fatiguefracture features were also discussed ac cording as SEMobservation. The resultsshow , at R = 0 1 ,thecyclicstress straincurvesof Ti 2 Al 2 5Zr alloytube and rodspecimensappear ascyclesoftening. When Ris 1 ,itsrodspecimen behavesascyclesoftening;atlow εavalues; whereasitbehavesascyclehardeningat high εa values. The LCFproperties determined withtubespecimen islower apparentlythanthat withrod one. Thereare muchirregularrecrystallineconvexin LCFfracturesof Ti 2 Al 2 5Zr alloytubeand rodspecimens, and muchsecondarycracks,fatiguestriationsand holes alsoexistamongthem .
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页码：585 / 590
页数：6
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