FATIGUE BEHAVIOUR OF Al-Si ALLOYS SUBJECTED TO REVERSED BENDING
Keywords:
Fatigue, eutectic Al-Si cast alloys, life cyclesAbstract
Most of the machine components are subjected to fatigue failure during their operation. Fatigue failure is a damaging process of components under cyclic loading. The purpose of the present work is to investigate the fatigue behavior of eutectic Al-Si cast alloys with the alloying elements of Cu, Mg and Ti. Standard specimens of rotating beam machine are prepared by machining process and tested on fatigue machine under completely reversed bending. The specimens are tested under constant bending moment and constant speed. The life cycles and bending stresses for various specimens are calculated by varying the composition of aluminum experimentally. The results indicate that the addition of Cu, Mg, Ti and grain refiner to the eutectic Al-Si cast alloy increases the life cycle of the alloy under constant load and speed.
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References
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