After adopting the quartz plate-like filter with 20 mesh to filter the ZL102 alloy from Al-30Si coarse alloy produced by electro-thermal method

the Fe content in the alloy is decreased from 1.14% to 0.43%

and its morphology is converted from bulky and rosette structure into fine bulky structure

so the tensile strength and elongation reach 182 MPa and 4.3%

respectively

increased by 38% and by 290%

respectively

compared with those of the alloy before filter. The results verify that mechanical properties of the alloy are closed to those of the alloy compounded by pure Al

fully meeting the requirement of commercial production.