Short particle strengthened aluminium alloy, fracture toughness investigated with instrumented impact tests

摘要

For different aluminum matrix alloys values of fracture mechanics were determined and compared. The investigated materials were aluminum matrix alloys with an aluminum matrix of AA 6061 (AlMg 1 SiCu) reinforced by small alumina (Al_2O_3) particles. Three point bend Specimens with four different percentages of reinforcement, different notch Orientation with elector eroded cuts or fatigue crack were investigated. The Values of fracture mechanics were determined by instrumented impact with An impact velocity of 0.1 m/s. The outcome shows the behaivour of values of Fracture mechanics over the percentage of reinfocement. The result shows That the instrumented impact tests is a reasonable tool for the optimisation of Materials for specific applications.