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Mechanical Properties of Al 6061/TiB2 In-Situ Formed Metal Matrix Composites

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Metal matrix composites were synthesized in an Al 6061 matrix reinforced by particulates of in-situ TiB2 from a reaction process via K2TiF6 and KBF4 salts in the matrix. Different weight percentage of the TiB2 particulates such as 4 wt%, 6 wt% and 8 wt% respectively, was employed for the composite and compared with as cast base Al 6061 matrix. A significant effect on the refinement of the grains was observed when the content of TiB2 particulates was increased from 4 to 8 wt%. The tensile strength and Rockwell hardness of the different weight percentage of in situ formed TiB2 composites was conducted as per the ASTM standard E08-16 and ASTM standard E18-15 respectively. The synthesized composite with 4 wt% to 8 wt% TiB2 was higher than that of the corresponding Al 6061 alloy. It is concluded that the mechanical properties were increased with increase in wt% of TiB2 particles additions. The Scanning Electron Microscopy (SEM) was used to examine the size and uniformity of TiB2 formations whereas the Energy Dispersive X-ray (EDX) analysis and X-ray diffractometer (XRD) were used to confirm the presence of TiB2 particles.
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Keywords: AL/TIB2 MMCS; AMMC; IN-SITU PROCESS; MECHANICAL PROPERTIES; STIR CASTING

Document Type: Research Article

Publication date: March 1, 2018

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  • Journal of Advanced Microscopy Research (JAMR) provides a forum for rapid dissemination of important developments in high-resolution microscopy techniques to image, characterize and analyze man-made and natural samples; to study physicochemical phenomena such as abrasion, adhesion, corrosion and friction; to perform micro and nanofabrication, lithography, patterning, micro and nanomanipulation; theory and modeling, as well as their applications in all areas of science, engineering, and medicine.
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