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  Scopus ID: 21100926589

An Experimental Investigation on Surface Roughness of AA4032 Reinforced Si3N4 Novel Encapsulated Metal Matrix Composite by Drilling Process

Hemachandran Bharath Ram, Lakshmaiya Natrayan and Sivakumar Vidhya Lakshmi

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.

Published on: September 28, 2023
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.

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