Al6061matrix with different amounts of nano-silver(1%and2%)was produced by stir-casting method.Producedsamples were characterized by hardness,tensile,compression and wear tests.The hardness of the specimens at room te...Al6061matrix with different amounts of nano-silver(1%and2%)was produced by stir-casting method.Producedsamples were characterized by hardness,tensile,compression and wear tests.The hardness of the specimens at room temperature wasmeasured by Brinnell hardness testing machine.The magnitude of hardness increased evidently with the function of the mass fractionof the nano-Ag particle.The polished specimens were examined with an optical microscope.The fracture surfaces of tensile andcompressive specimens were further examined by scanning electron microscopy.Wear mechanisms were discussed based on thescanning electron microscopy observations of worn surface and wear debris morphology.There is an increase in compressivestrength,ultimate tensile strength,elongation and wear resistance of the Al?Ag composites compared with base alloy.The executionof stir-casting technique is relatively homogenous and fine microstructure which improves the addition of reinforcement material inthe molten metal.The results show that Al6061?nano-silver which is the best combination of hardness can replace the conventionalmaterial for better performance and longer life.展开更多
文摘Al6061matrix with different amounts of nano-silver(1%and2%)was produced by stir-casting method.Producedsamples were characterized by hardness,tensile,compression and wear tests.The hardness of the specimens at room temperature wasmeasured by Brinnell hardness testing machine.The magnitude of hardness increased evidently with the function of the mass fractionof the nano-Ag particle.The polished specimens were examined with an optical microscope.The fracture surfaces of tensile andcompressive specimens were further examined by scanning electron microscopy.Wear mechanisms were discussed based on thescanning electron microscopy observations of worn surface and wear debris morphology.There is an increase in compressivestrength,ultimate tensile strength,elongation and wear resistance of the Al?Ag composites compared with base alloy.The executionof stir-casting technique is relatively homogenous and fine microstructure which improves the addition of reinforcement material inthe molten metal.The results show that Al6061?nano-silver which is the best combination of hardness can replace the conventionalmaterial for better performance and longer life.
