For the first time, joint experiments have been conducted with samples of A356-TiB2 cast aluminum alloy under quasi-static and plane shock-wave loading. Alloys were obtained by introducing TiB2 particles using a master-alloy, combined with the effect of vibration treatment on the melt in order to fragment the dendritic structure and prevent its branching during solidification. The melt treatment and introduction of TiB2 particles allowed the average grain size to reduce to a third of that of the base cast alloy. During the experiments the strain rate and the shock-wave compression pressure were varied. It was shown that introducing particles affected the strain-rate sensitivity of the alloy. The best elastic–plastic and strength characteristics at increased strain rates of over 0.01 s−1 were demonstrated by an A356 alloy without TiB2 particles.

中文翻译：

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振动和向熔体中添加 TiB2 对 A356 合金结构和应变率敏感变形行为的影响

首次在准静态和平面冲击波载荷下对A356-TiB2铸铝合金样品进行了联合实验。通过使用母合金引入 TiB2 颗粒，结合对熔体进行振动处理的效果，以破碎树枝状结构并防止其在凝固过程中支化，从而获得合金。熔体处理和 TiB2 颗粒的引入使平均晶粒尺寸减小到基础铸造合金的三分之一。在实验过程中，应变率和冲击波压缩压力是变化的。结果表明，引入颗粒会影响合金的应变率敏感性。不含 TiB2 颗粒的 A356 合金证明了在应变速率增加超过 0.01 s-1 时的最佳弹塑性和强度特性。