Abstract
The design of industrial cast parts Al–7Si–0.3Mg alloy is widely used as structural components of aircraft and automotive safety components. The investigation mainly focuses on fatigue life influenced by organic and inorganic particles with different weight fractions measured at different stress levels over a wide range spectrum of three different materials which are evaluated and compared. The notch and un-notch specimens of these materials are described fatigue strength and crack mechanism using high cycle fatigue. According to Basquin constants, fatigue notch factor and notch sensitivity factor were studied. The A356/7.5% rice husk ash-7.5% fly ash hybrid composite increases fatigue strength of 30% and lower the fatigue notch factor to 25% compared to the matrix alloy. Porosity is the main factor for estimation of fatigue life. The micro-/macro-cracks and fracture surface are revealed under the SEM and optical microscope analysis.
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