Mobility of 〈001〉 dislocations and formation of cleavage nuclei

TEM and SEM observations of Fe510Nb-type HSLA steel show the frequent occurrence of glissile < 001 > dislocations, particularly in the imediate vicinity of cleavage fracture surfaces. A cleavage nucleation model is developed which involves glissile < 001 > {011} dislocations meeting at c...

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Bibliographic Details
Published in:Scripta metallurgica et materialia 1990, Vol.24 (1), p.7-12
Main Authors: Sleeswyk, A.W., Mandziej, S.
Format: Article
Language:English
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Summary:TEM and SEM observations of Fe510Nb-type HSLA steel show the frequent occurrence of glissile < 001 > dislocations, particularly in the imediate vicinity of cleavage fracture surfaces. A cleavage nucleation model is developed which involves glissile < 001 > {011} dislocations meeting at cell walls. Photomicrographs. 5 ref.--D.O.N.
ISSN:0956-716X
DOI:10.1016/0956-716X(90)90558-X