HREM STUDY OF THE AUSTENITE/MARTENSITE INTERFACES IN AN Fe-9Ni ALLOY

1.Intr0ductionTheearlyinvestigati0nsll'2]dem0nstratedthatfccphaseandbccphasedonotmatchwell.Fromthe1970's,thefcc/bccinterfacestructurewasreconsideredandthestructuralledgemodelwassllggested3-5].Severalstudieshadbeendonewithc0nventi0nalTEMl6-8].Theyallf0undthatmisfitdislocati0nsexistinfcc/bccinterfacesandtheinterfacesaresemicoherent.Inrecentyears,HREMhasbeenempl0yedt0imagetheatomicstructureoffCc/bccinterface.Mahonetal.l9]studiedthe{252},austeinte/martensiteinterface,i.e.thehabitplaneinFe-8C…