Key roles of particles in grain refinement and material strengthening for an aluminum matrix composite
Key roles of particles in grain refinement and material strengthening for an aluminum matrix composite
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颗粒在铝基复合材料晶粒细化和材料强化中的关键作用
DOI：
10.1016/j.msea.2020.140414
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发表时间：
2021-01-13
期刊：
影响因子：
6.4
通讯作者：
Zhao, Yonghao
中科院分区：
文献类型：
--
作者：
Nie, Jinfeng;Liu, Yanfang;Zhao, Yonghao
采用高压扭转法制备了含~ 5%TiB_2/TiC颗粒的铝基复合材料（AMC）。详细分析了复合材料的显微组织和力学性能。将处理后的AMC样品与相应的整体基体材料进行比较，以研究颗粒在晶粒细化和材料强化中的关键作用。发现小部分颗粒有利于晶粒细化，同时保持材料的完整性。此外，颗粒的存在赠款超细晶AMC比超细晶铝更大的应变硬化能力（能量储存能力）。
An aluminum matrix composite (AMC) containing -5% TiB2/TiC particles is processed by high-pressure torsion. The microstructures and mechanical properties of the composites are analyzed in detail. The processed AMC samples are compared to the corresponding monolithic matrix material to investigate the key roles of particles in grain refinement and material strengthening. It is found that a small portion of particles is beneficial for grain refinement while maintaining the integrity of the material. In addition, the presence of particles grants the ultrafine-grained AMC larger strain hardening capacity (energy storage capacity) than the ultrafine-grained aluminum.