Journal
MATERIALS
Volume 14, Issue 15, Pages -Publisher
MDPI
DOI: 10.3390/ma14154315
Keywords
Al-Fe-Si-Zn-Cu; B4C; powder metallurgy; mechanical properties; corrosion
Categories
Funding
- Deanship of Scientific Research at King Khalid University [R.G.P. 2/127/42]
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In this study, AA8079 matrix composites with varying weight percentages of B4C were synthesized using powder metallurgy. The impact of sintering parameters on the properties of the composites was investigated, with higher sintering temperatures and pressures leading to improved density, hardness, compressive strength, and corrosion resistance. Characterization techniques such as XRD, EDAX, and SEM confirmed the uniform dispersion of B4C reinforcement within the AA8079 matrix.
In this paper, Al-Fe-Si-Zn-Cu (AA8079) matrix composites with several weight percentages of B4C (0, 5, 10, and 15) were synthesized by powder metallurgy (PM). The essential amount of powders was milled to yield different compositions such as AA8079, AA8079-5 wt.%B4C, AA8079-10 wt.%B4C, and AA8079-15 wt.%B4C. The influence of powder metallurgy parameters on properties' density, hardness, and compressive strength was examined. The green compacts were produced at three various pressures: 300 MPa, 400 MPa, and 500 MPa. The fabricated green compacts were sintered at 375 degrees C, 475 degrees C, and 575 degrees C for the time period of 1, 2 and 3 h, respectively. Furthermore, the sintered samples were subjected to X-ray diffraction (XRD) analysis, Energy Dispersive Analysis (EDAX), and Scanning Electron Microscope (SEM) examinations. The SEM examination confirmed the uniform dispersal of B4C reinforcement with AA8079 matrix. Corrosion behavior of the composites samples was explored. From the studies, it is witnessed that the rise in PM process parameters enhances the density, hardness, compressive strength, and corrosion resistance.
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