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Work-hardening in cleavage fracture toughness

✍ Scribed by N.J. Petch; R.W. Armstrong

Publisher: Elsevier Science
Year: 1989
Weight: 616 KB
Volume: 37
Category: Article
ISSN: 0001-6160
DOI: 10.1016/0001-6160(89)90155-7

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✦ Synopsis

Ahtract-The contribution of work-hardening to fracture toughness, when the fracture mechanism is cleavage, is considered. This leads to simple relationships for the effect of the dislocation friction stress and of grain size on toughness. There is agreement with published measurements.

R&sum-n considtre la contribution de l'tcrouissage 21 la r6sistance B la rupture, lorsque le mkcanisme de la rupture est le clivage. Ceci conduit B des relations simples pour l'effet de la contrainte de frottement des dislocations, et de la taille des grains, sur la rtsistance. Ces relations sont en accord avec des mesures publikes.

Zusammenfassung-Der

Beitrag der Verfestigung zur BruchzSihigkeit wird fiir den Fall betrachtet, da13 der Bruchmechanismus Spaltung ist. Hier ergeben sich einfache Zusammenhlnge zwischen Reibungsspannung der Versetzungen und KomgriiDe einerseits und der ZLhigkeit andererseits. Wir finden iibereinstimmung mit verijffentlichten Ergebnissen.

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