Fatigue and fracture toughness of aluminium alloys reinforced with SiC and alumina particles |
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| Affiliation: | 1. Department of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore, Tamil Nadu, India;2. Department of Mechanical Engineering, Coimbatore Institute of Technology, Anna University, Coimbatore, Tamil Nadu, India |
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| Abstract: | The mechanisms and fracture mechanics of fatigue crack initiation and the growth of small and large fatigue cracks and fracture toughness are reviewed in this paper. It is concluded that: (1) there are many factors which can affect fatigue crack initiation, some of which are understood; (2) small and large fatigue cracks can be correlated with stress intensity factor if closure is excluded; and (3) fracture toughness is mainly related to matrix plasticity but is strongly influenced by particle characteristics. |
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