铸造铝合金的变质处理是生产中广泛采用的工艺过程。目前工业上采用的变质剂以Na为主,但是这在工艺上存在着一系列至今无法克服的缺点,如变质有效期短,具有腐蚀性等等。因此,人们正在广泛探索新的变质剂,如RE、Sr和Sb等。但就目前看到的资料,这些研究大都注重对铸态下组织形态 Modification of cast aluminum alloy is widely used in the production process. At present, Na is the main modifier used in industry. However, there are a series of disadvantages that can not be overcome so far, such as the short period of metamorphism, corrosiveness and so on. Therefore, new modifiers such as RE, Sr and Sb are being widely explored. However, for the information currently available, most of these studies focus on the as-cast morphology