Abstract Al3Ti/ADC12 composite was synthesized in situ using Al-fluoride potassium titanate (K2TiF6) as the reaction system and an ultrasonic assisted direct melt reaction. Results indicate ultrasonic chemistry reactions are both accelerated and more complete compared to traditional in situ reactions. Al3Ti reinforced particles with a regular shape and size of 1-2 μm were well distributed and as-cast microstructures of composites were superior. Composite particles under ultrasonic assistance were also refined to a greater extent. Tensile strength and elongation rate of the composites reached 255 MPa and 2.2%, an increase of 19.1% and 37.5% respectively to those without ultrasonic aid. Cleavage surface of the composite declined and the number of dimples increased while dimples became smaller and deeper, showing obvious ductile fracture.

中文翻译：

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超声化学原位反应合成Al3Ti/ADC12复合材料

摘要 以氟化铝钛酸钾（K2TiF6）为反应体系，超声辅助直接熔融反应，原位合成了Al3Ti/ADC12复合材料。结果表明，与传统的原位反应相比，超声波化学反应既加速又更完整。Al3Ti 增强颗粒形状规则，尺寸为 1-2 μm，分布良好，复合材料的铸态微观结构优良。超声波辅助下的复合颗粒也得到了更大程度的细化。复合材料的抗拉强度和伸长率分别达到255 MPa和2.2%，比无超声辅助的复合材料分别提高了19.1%和37.5%。复合材料的解理面下降，韧窝数量增多，韧窝变小变深，韧性断裂明显。