Abstract
The fatigue properties of The Aluminum alloy (6061) metal matrix Nano composites (MMNCs), with different ratio of SiC wt nano particles (0.5, 1.0, 1.5, 2.0 and 2.5%.) to fabricated by stir casting were been investigated with rotating bending type of load and the stress ratio(R=-1) at room temperature. The composite were reinforced by SiC of 10 Nanometer in grain size to. The fatigue strength and life were been obtained experimentally by using S-N curves for different ratio wt % nano particles. The highest fatigue strength and life were occurred at .2.0 wt. % nano particles due to reasonably uniform distribution reinforcement of nano particles and minimal the porosity. The enhancement percentage in endurance fatigue limits are 11.48 % and 11.05% for 107 and 5*108 cycles respectively.
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