Fatigue Behavior of Ni-P Coated Si3N4 Reinforced Al6061 Composites

摘要: Abstract Ni–P coated Si 3 N 4 reinforced Al6061 composites were fabricated by stir casting technique. Silicon nitride particles varied in steps of 2 from 6 wt.% to 10 wt.%. Cast matrix alloy and developed hot forged at a temperature 500C using 300T hydraulic hammer. Both as cast, its subjected microstructural studies fatigue strength tests. Microstructural reveal even distribution silicon with excellent bond between the reinforcement both cast condition. It is observed that, increased content do result significant improvement strength. However, when compared composites, exhibit higher demonstrate improved unreinforced alloys under identical test conditions. Fractured surfaces examined scanning electron microscopy (SEM) for possible fracture mechanisms.