Investigations on Mechanical Properties of Micro- and Nano-Particulates (Al2 O3/B4C) Reinforced in Al 7075 Matrix Composite
Investigations on Mechanical Properties of Micro- and Nano-Particulates (Al2 O3/B4C) Reinforced in Al 7075 Matrix Composite
复制标题
Al 7075 基复合材料中增强微米和纳米颗粒 (Al2 O3/B4C) 的力学性能研究
DOI：
10.1007/s40962-021-00741-1
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发表时间：
2022
影响因子：
2.6
通讯作者：
B. Arul kumar
中科院分区：
文献类型：
--
作者：
G. Kumaresan;B. Arul kumar
本研究的目的是研究在铝基中添加纳米颗粒和微颗粒对复合材料力学性能的改善。采用搅拌铸造和超声空化探针辅助铸造工艺制备了不同颗粒重量百分比的微纳复合材料，并用金相显微镜和扫描电镜对其进行了表征。按照ASTM标准对复合材料的拉伸强度、冲击强度、硬度等力学性能进行了分析。分析表明，纳米颗粒增强铝基复合材料具有较高的表面能，显著提高了复合材料的力学性能。
The objective of this study was to investigate the improvement made on the mechanical properties of the composites by the addition of micro- and nanoparticles to aluminium matrix. The micro- and nano-composites having different weight percentages of particles were fabricated using stir-casting and ultrasonic cavitation probe-assisted casting processes, and they were characterized using metallurgical microscope and scanning electron microscope. The mechanical properties of the composites, such as tensile strength, impact strength, and hardness, were analysed as per the ASTM standards. The analysis indicated that the nanoparticles’ reinforcement in aluminium matrix composite significantly improved the mechanical properties compared to the micro-particles owing to their high surface energy.