Abstract TiB2 nanoparticles reinforced AS41A alloys were fabricated by ultrasonic assisted stir casting. The influence of ultrasonic treatment and TiB2 nanoparticles on the microstructure and mechanical properties of AS41A magnesium alloy was investigated. The results showed that the ultrasonic treatment obviously refined microstructure, thereby improving the mechanical properties of the magnesium alloys. The addition of TiB2 further increased the tensile strength slightly while maintaining the improved elongation as the ultrasound-treated matrix alloys.The ultimate tensile strength, yield strength and elongation of the obtained nanocomposites were improved by 27.4%, 43.5% and 84.6% compared with those of the as-cast matrix alloys, respectively.

中文翻译：

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超声波处理和纳米粒子添加对AS41A镁合金组织和力学性能的影响

摘要 采用超声辅助搅拌铸造法制备了TiB2纳米颗粒增强AS41A合金。研究了超声处理和TiB2纳米颗粒对AS41A镁合金显微组织和力学性能的影响。结果表明，超声处理明显细化了组织，从而提高了镁合金的力学性能。TiB2的加入进一步提高了拉伸强度，同时保持了超声处理基体合金的伸长率提高。所得纳米复合材料的极限拉伸强度、屈服强度和伸长率分别提高了27.4%、43.5%和84.6%。分别为铸态基体合金。