Elsayd Ayman, Shash Ahmed Y, Mattar Hisham, Löthman Per A, Mitwally Mohamed E
Central Metallurgical Research and Development Institute, Cairo, Egypt.
Mechanical Design and Production Engineering Department, Faculty of Engineering, Cairo University, 12316, Giza, Egypt.
Heliyon. 2023 Jun 1;9(6):e16887. doi: 10.1016/j.heliyon.2023.e16887. eCollection 2023 Jun.
Powder metallurgy methods, particularly ball milling, are up-and-coming in tuning metal matrix composite (MMC) properties. This study uses ball milling at various milling times to create an aluminum matrix composite (AMC) reinforced with magnetite nanoparticles. The milling time was optimized to create an AMC with favorable mechanical and magnetic properties, and its effect on magnetism, microstructure, and hardness was studied. The AMC displayed the highest magnetic saturation of 11.04 emu/g after 8 h of milling. After compaction and sintering, characterization of the final composite material using Energy Disperse Spectroscopy and X-ray diffraction (XRD) showed the presence of AlO and FeAl phases leading to enhanced mechanical properties in terms of Vickers hardness that reached a value of 81 Hv corresponding to an increase of 270% compared to unreinforced aluminum.
粉末冶金方法，尤其是球磨法，在调整金属基复合材料（MMC）性能方面正崭露头角。本研究采用在不同球磨时间下进行球磨，以制备出用磁铁矿纳米颗粒增强的铝基复合材料（AMC）。对球磨时间进行了优化，以制备出具有良好机械性能和磁性的AMC，并研究了其对磁性、微观结构和硬度的影响。球磨8小时后，AMC的磁饱和强度最高达到11.04 emu/g。压实和烧结后，使用能谱仪和X射线衍射（XRD）对最终复合材料进行表征，结果表明存在AlO和FeAl相，这使得维氏硬度方面的机械性能得到增强，达到了81 Hv的值，与未增强的铝相比提高了270%。
