The Composition Design of Al-Mg-Si Alloys

The phase diagram of Al-Mg-Si alloys was calculated by Thermo-Calc program,and function of temperature and Mg2Si content was got.The tensile test was performed to obtain the curve of Mg2Si content vs tensile strength for optimizing the composition of Al-Mg-Si alloys.The contens of Mg and Si can be obtained according to the requirement of high strength property of alloys as well as the relationship among temperature,Mg2Si content and tensile strength.Considerating the relationship among temperature Mg2Si content and elongation the composition of Al-Mg-Si alloy can be designed.