Abstract In this paper, Ti particles reinforced AZ91 composites were prepared by spark plasma sintering (SPS). The microstructure, work hardening behavior and fracture surface morphology were studied in detail. The results of this study showed that the micrometer-scale Ti particles cannot affect the grain size of composites significantly. The microstructure and fracture morphology of Ti particle reinforced AZ91 composites showed that the interface between titanium and magnesium is firmly bonded. As Ti content increasing, the compressive yield strength increased significantly. The results of compressive tests indicated that Ti particles can significantly enhance the yield strength and compressive strength of AZ91. With the increasing Ti content, the work hardening rate (θ), the work the work hardening coefficient (n) and hardening capacity (Hc) decreased.

中文翻译：

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放电等离子烧结制备Ti颗粒增强AZ91复合材料的加工硬化行为

摘要 本文采用放电等离子烧结(SPS) 方法制备了Ti 颗粒增强AZ91 复合材料。对显微组织、加工硬化行为和断口形貌进行了详细研究。本研究结果表明，微米级 Ti 颗粒不会显着影响复合材料的晶粒尺寸。Ti颗粒增强AZ91复合材料的显微组织和断口形貌表明钛和镁之间的界面结合牢固。随着Ti含量的增加，压缩屈服强度显着增加。抗压试验结果表明，Ti颗粒可以显着提高AZ91的屈服强度和抗压强度。随着Ti含量的增加，加工硬化率（θ），