<div>Related to traditional engineering materials, magnesium alloy-based composites
have the potential for automobile applications and exhibit superior specific
mechanical behavior. This study aims to synthesize the magnesium alloy (AZ61)
composite configured with 0 wt%, 4 wt%, 8 wt%, and 12 wt% of silicon nitride
micron particles, developed through a two-step stir-casting process under an
argon environment. The synthesized cast AZ61 alloy matrix and its alloy embedded
with 4 wt%, 8 wt%, and 12 wt% of Si<sub>3</sub>N<sub>4</sub> are subjected to an
abrasive water jet drilling/machining (AJWM) process under varied input sources
such as the diameter of the drill (D), transverse speed rate (v), and
composition of AZ61 composite sample. Influences of AJWM input sources on metal
removal rate (MRR) and surface roughness (Ra) are calculated for identifying the
optimum input source factors to attain the best output responses like maximum
MRR and minimum Ra via analysis of variant (ANOVA) Taguchi route with L16 design
approach. The ANOVA analysis revealed that D, v and the composition of AZ61
alloy composite contribute 26.45%, 16.28%, and 20.84%, respectively, to the
output response conditions for higher MRR. Additionally, design 7 exhibits a
high MRR of 0.017 g/s and a surface roughness (Ra) of 0.84 μm. The optimum AWJM
input source of design 7 is proposed for industries to mass production
applications.</div>