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摘要
The authors propose a cleavage fracture initiation model for bainite steels. The authors considered three stages of fracture initiation in the model: stage I, microcrack initiation in the brittle phase; stage II, propagation of the microcrack to a neighbor matrix; and stage III, propagation of the cleavage crack across the packet boundary. The cleavage fracture is assumed to initiate when all three stage conditions are satisfied in any one of the volume elements surrounding a notch tip. The authors applied this assumption to bainite steels and validated this model by comparing results of the analysis and toughness test results.
- 出版日期2016-9
