A statistical model of cleavage fracture in structural steels with power-law distribution of microcrack size |
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Authors: | Wei-Sheng Lei |
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Institution: | Applied Materials, Inc., 1786 Duvall Drive, San Jose, CA 95130, USA |
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Abstract: | Based on the well-accepted physical understanding that cleavage fracture of structural steels is preceded by plastic deformation, a critical flaw in the Beremin model and its modifications is proposed, and a new statistical model with the power-law distribution of microcracks is obtained to describe the cumulative probability of cleavage fracture. A set of cleavage fracture toughness data of a nuclear pressure vessel steel is used to highlight the difference between the new model and the Beremin model. |
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Keywords: | Structural steels cleavage fracture statistical modelling plastic deformation |
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