AlSi7Mg合金半固态浆料经触变成形及热处理后 ,其性能得到显著提高。试验采用电子显微镜、扫描电镜及电子拉伸机 ,研究了液相线半连续铸造法制备的AlSi7Mg合金半固态浆料的组织、二次加热的合金组织、经触变成形及T6处理后的组织与性能。结果表明 ,触变成形并经热处理后的AlSi7Mg合金 ,其组织中析出相为Al3Si和AlSi化合物 ,σb 达到 2 90 .2MPa ,δ5达到 12 .9% ,此结果为液相线半连续铸造AlSi7Mg合金触变成形的深入研究奠定了基础 AlSi7Mg alloy semi-solid slurry by thixoforming and heat treatment, its performance has been significantly improved. The microstructure, reheating alloy structure of AlSi7Mg alloy semi-solid slurry prepared by liquidus semi-continuous casting method were studied by means of electron microscope, SEM and electronic stretching machine. After thixoforming and T6 treatment Organization and performance. The results show that AlSi7Mg alloy with thixoformed and heat-treated AlSi7Mg alloy has a precipitated phase of Al3Si and AlSi with a σb of 2 90.2 MPa and a δ5 of 12.9%. The results show that liquid phase semi-continuous casting of AlSi7Mg Alloy thixoforming laid the foundation for further research