对稀土铝合金采用三元变质剂加B_4C综合变质处理的研究表明,显微组织和机械性能均优于单独采用三元变质剂或B_4C变质剂,变质有效时间延长至2.5h以上。两种变质剂的混合使用没有改变各自的变质机制,然而,两者的复合作用使变质作用加强。 The study of using ternary metamorphic agent plus B_4C comprehensive modification on rare earth aluminum alloy shows that the microstructure and mechanical properties are better than that of using ternary metamorphic agent alone or B_4C modifier alone, and the effective time of metamorphism is extended to above 2.5h. The combination of the two modifiers did not change their metamorphism, however, the combination of the two enhanced the metamorphism.