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金属学报(英文版) 1997
EFFECT OF CHROMIUM AND BORON ON ENVIRONMENTAL EMBRITTLEMENT OF FORGED Fe3Al
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Abstract:
1.IntroductionIronaluminidesbasedonFe3AlandFeAlhaveexcellentresistancetooxidationandrelativelylowcost,whicharepr0misingcandidatesforuseasastructuralmaterialincor-rosiveenvir0nmelltsl1'2].H0wever,thesealloyshaven0tyetfoundwidespreadusebecausetheyexhibitpoorductilityatambienttemperatures,accompaniedbybrittlefracture-Thebrittlebehaviorhasrecentlybeenattributedt0environmenta1embrittlementinvolvinggen-eration0fatomichydr0genatthecracktipwhichisthentransportedintothespecimenduringloadingpr0ducingb…