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Study on fracture strain of discontinuously reinforced metal matrix composites |
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| Authors: | Quan Gaofeng Song Yujiu Tu Mingjing Bai Jinbo |
| Affiliation: | (1) State Key Laboratory for Mechanical Behaviors of Materials, Xi'an Jiaotong University, P. R. China. e-mail;(2) Department of Metal Materials, Sichuan Union University, P. R. China;(3) Laboratoire de Mecanique des Sols, Structures et Materiaux, CNRS, URA850 Ecole Centrale Paris, France |
| Abstract: | The fracture strain of discontinuously reinforced metal matrix composites (DRMMCs) is studied according to a damage mechanics model proposed by McClintock, with a localized crack propagation hypothesis and particle-related crack initiation mechanism. An estimation equation is proposed. The estimated results are verified with the data available in the literature and those measured on some types of DRMMCs obtained by powder metallurgical techniques. The experimental results show good agreement with the estimation model. |
| Keywords: | MMCs fracture ductility crack initiation particle discontinuous reinforcement. |
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