By injecting KBF4+Ti powder into molten Al and rapidly stirring,it has been shown that TiB_2 particulates reunion on grain boundary disappear and TiB_2 particulates(less than 0.5um) uniformly distribute in the aluminum matrix composite.

• 结果表明:通过氩气流载入反应混合粉；并快速搅拌熔体；可克服TiB2颗粒在晶界的团聚；细化颗粒；获得颗粒小于0.；5um、且较均匀分布的TiB2/Al复合材料。