Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10416295 | Engineering Fracture Mechanics | 2005 | 20 Pages |
Abstract
The cleavage fracture of a carbon structural steel is shown to deviate from what is typical of a ferritic matrix. This occurs at temperatures ranging from â150 to 20 °C and affects the scatter of fracture toughness, and fractographic features. To explain the observed discrepancies a probabilistic model is developed by linking physical mechanisms of cleavage with continuum mechanics analysis applied to fracture. The model assumes that cleavage is nucleated and triggered in pearlite within the blunting zone of the crack tip by the mechanism of Miller and Smith. Once the model is calibrated for the steel, its predictions are shown to agree with the experimental results.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
A. Valiente, J. Ruiz, M. Elices,