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Fracture of brittle particles in a ductile matrix

✍ Scribed by K. Wallin; T. Saario; K. Törrönen

Publisher
Springer Netherlands
Year
1986
Tongue
English
Weight
434 KB
Volume
32
Category
Article
ISSN
1573-2673

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✦ Synopsis

Prerequisites for precipitate cracking in a yielding ductile matrix have been examined. A statistical model based on the fibre loading model combined with weakest link fracture theory is presented. With the model it is possible to estimate the effect of different variables on the particle fracture probability quantitatively. The predictions made are in excellent agreement with experimental results for a variety of different precipitate types. The result can be applied to calculate the probability of cleavage fracture for steels.

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A model to predict the increase in critical flaw size or stable crack growth potential which can occur by the inclusion of ductile fibers in a brittle matrix is considered. The model is based upon the superposition of two known stress intensity solutions; one for the crack opening mode resulting fro