SYMPOSIA PAPER Published: 01 January 1995

Prediction of Cleavage Fracture Probability for Ferritic Steels in the Transition Region


A method is described for modelling the stochastic variability of toughness data for ferritic steels in the brittle to ductile transition regime. The present model is based on two ingredients: a weakest link approach using Weibull statistics with a suitable modification to include the effect of ductile tearing, and an accurate expression of the material J-R curve, determined from fractography. The model provides a rationale for the different fracture behaviour of a material over the whole range of temperature, from fully stable J-R behaviour at high temperature down to brittle fracture under LEFM conditions at low temperature.

Author Information

Bicego, V
CISE SpA, Milan
Elli, A
CISE SpA, Milan
Rinaldi, C
CISE SpA, Milan
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Developed by Committee: E08
Pages: 448–463
DOI: 10.1520/STP14609S
ISBN-EB: 978-0-8031-5294-6
ISBN-13: 978-0-8031-1882-9