Abstract
In this work, the impact of melt temperature on the microscopic and mechanical characteristics of AlSi5Cu3 alloy was studied. The AlSi5Cu3 alloy was individually melted at 750 °C, 800 °C, and 850 °C followed by pouring into the metal mold, and the characteristics of castings were evaluated. The results revealed that, due to a higher cooling rate in 750 °C melt temperature, the secondary dendrite arm spacing (SDAS) was reduced by 8.58% and 20.40% while the grain size was decreased by 5.35% and 9.18% compared to 800 °C and 850 °C respectively, indicating formation refined grain structure. Moreover, due to grain refinement, the castings developed at 750 °C melt temperature possessed maximum mechanical properties followed by 800 °C and 850 °C. For 750 °C melt temperature, the ultimate tensile strength (UTS) was improved by 3.78% and 7.03%, whereas, the hardness was increased by 5.40% and 14.70% compared to 800 °C and 850 °C respectively. Overall, the grain refinement and mechanical performance were improved by lowering the melt temperature.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
