Abstract
This study compared the surface roughness of composites with 10% Si3N4 and manufactured them with a novel encapsulation technique to the as-cast AA4032. Utilizing a novel encapsulation technique, the stir-casting process was employed to create samples for both groups. For group 1, AA4032 was used as cast, while for group 2, a composite comprised of Si3N4 (10%) and AA4032 was used. The samples were made following ASTM E92 specifications, and the surface roughness was assessed using a Mitutoyo surface roughness tester (SJ-410). Each group contained 20 samples. The sample size calculation was performed using a G-power of 80%, α per set = 0.05, and a total sample size of 40. The material containing 10% Si3N4 filler exhibits the highest surface finish, which is 39% lesser than AA4032 in its as-cast state. The statistical t-test research demonstrates that there could be a significant p = 0.00 (p < 0.05) difference between group 1 and group 2’s mean variance of surface finish. Within the limitations of this study, it is manifest that the 10% Si3N4 reinforcement significantly reduces the AA4032 composite’s surface roughness.
doi: 10.17756/nwj.2023-s3-002
Citation: Ram HB, Natrayan L, Lakshmi SV. 2023. An Experimental Investigation on Surface Roughness of AA4032 Reinforced Si3N4 Novel Encapsulated Metal Matrix Composite by Drilling Process. NanoWorld J 9(S3): S06-S10.