Optimization Design of High Strength and High Thermal Conductivity Hypereutectic Aluminum-silicon Alloy Composition
The requirements for aluminum alloy property in the market are usually multifaceted,including high strength,high thermal conductivity,low density,and low coefficient of thermal expansion.In this study,within the standard composi-tion range of aluminum alloy JIS AC9B,the CALPHAD thermodynamic calculation method was used to simulate the compre-hensive property of aluminum alloys with different mass fractions of elements.This includes yield strength,thermal conductiv-ity,coefficient of thermal expansion,electrical conductivity,density,tensile strength,Poisson's ratio,Young's modulus,etc.,to establish the functional relationship between alloy property and mass percentages of alloying elements,as well as a multivariate linear programming problem,to slove the optimal alloy performance and alloy components.This provides a theo-retical basis for the optimization design of high strength and high thermal conductivity aluminum alloy components.