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金属学报(英文版) 1998
NUCLEATION OF RARE EARTH-RICH PHASE PARTICLES IN Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nd ALLOYKeywords: Ti alloy,rure earth rich phase,nucleation Abstract: 1.IntroductionTi-5AL4Sn2Zr-1Mo-0.25Si-1Nd(Ti-55alloy)isanearalphahightemperaturetitaniumaJloyofferingexcellenttensilestrengthandgoodcreepresistanceupto550"Ctogetherwithimprovedfatiguestrengthl11.Additionoflwt%NdtoTi-Al-Sn-Zr-McrSisystemresultsinauniformdistribution0ffineincoherentdispers0idsandimproveshightemperatureproperties2]-ForraPidsolidilicati0n,supersaturateds0lids0lutionofrareearthelementsintitedumaJloypr0ducesveryfinestabledispersoidswhichgenerallyuniformlydistributeinmat.ir…
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