Publication

Abstract : The present research deals with the fabrication of Al–Si–Mg-Sr alloy cast using a permanent mould. At different ageing temperatures and time, the cast alloys were heat-treated for the improvement of tribological properties. The alloys were solutionized for 12 h at 525 °C and aged at different ageing temperatures and time. The wear processes parameter used for the present investigation were ageing temperature, ageing time, and applied load. Pin-on-Disc tribometer was used for performing the wear test. The tribological characteristics of the alloy cast were investigated using response surface methodology. The investigation found that the alloying of strontium refined the microstructure of Al–Si–Mg. It was noted from the findings obtained that there was a substantial change in the value of the specific wear rate and coefficient of friction as the wear process factors were varied. Moreover, the worn-out surface analysis on the heat-treated specimens was studied using a scanning electron microscope