摘要
AZr-1.15wt%Cr-0.10wt%Fealloywasbeta-quenchedfrom1050℃toproduceasupersaturatedα′-phase,andthenheatedforvaryingtimesattemperaturesfrom650℃to760℃toprecipitateZr（CrFe）2.Athermoelectricpower（TEP）techniqueandtransmissionelectronmicroscopy（TEM）wereusedtomonitorthisprecipitationprocess.UsingtheJohnson-Mehl-Avramiequation,theTEPresultsandalineregressionmethod,theactivationenergyfordiffusionandthediffusioncoefficientofchromium（andFe）inα-Zrhavebeencalculatedover650℃～760℃.Thetemperaturedependenceofthediffusioncoefficient,DCr/α（cm2/s）isdescribedat650℃～760℃bytherelationshipformula.ThecoarseningoftheZr（CrFe）2particlesshowsat1/2dependenceofmeanparticlesizeonagingtime,t.Suchatimedependenceistypicalofcoarseningwhereatomtransferacrosstheinterfaceisrate-controlling.
出版日期
1992年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
