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研究了Al3Ti4B细化剂和Al10Sr变质剂对ZL10 7合金显微组织的影响。结果表明 :单一Al3Ti4B细化剂的添加量大于 0 .6 %时 ,可使ZL10 7合金获得 10 0～ 12 0 μm左右的等轴枝晶 ,且其抗衰退期至少不小于 2 40min ,但对共晶硅没有变质作用 ;而一定量的Al10Sr变质剂除了至少能在 2 40min内使共晶硅充分变质外 ,还对初生α(Al)晶粒具有一定的细化作用 ;当Al3Ti4B细化剂和Al10Sr变质剂共同作用于ZL10 7合金时 ,Al Sr有效变质时间大为减少 ,晶粒有所长大 ,但两者在合适的匹配添加量时 ,可获得与单一添加时相似或相同的细化、变质效果。
The effect of Al3Ti4B refiner and Al10Sr modifier on the microstructure of ZL107 alloy was studied. The results show that when Al3Ti4B refiner is added to more than 0.6%, the equiaxed dendrites around 10 0 ~ 12 0 μm can be obtained and the antidegradation period of ZL10 7 alloy is at least not less than 240 minutes. Eutectic silicon has no metamorphism; while a certain amount of Al10Sr metamorphic agent can refine the primary α (Al) crystal grains in a least amount within 2 40 min, while Al 3 Ti 4 B refiner With the Al10Sr modifier acting on the ZL10 7 alloy, the effective deterioration time of Al Sr is greatly reduced and the grains grow up. However, both of them have the similar or the same thinning The effect of deterioration.