Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 101, Issue 2 (2023) 137-163 137 Journal of Advanced Research in Fluid Mechanics and Thermal Sciences Journal homepage: https://semarakilmu.com.my/journals/index.php/fluid_mechanics_thermal_sciences/index ISSN: 2289-7879 Characterization and Machinability Studies of Aluminium-based Hybrid Metal Matrix Composites – A Critical Review Suhas Prakashrao Patil 1 , Sandeep Sadashiv Kore 1,* , Satish Suresh Chinchanikar 1 , Shital Yashwant Waware 2 1 Department of Mechanical Engineering, Vishwakarma Institute of Information Technology, Pune, India 2 Department of Mechanical Engineering, Dr. D. Y. Patil Institute of Technology Pimpri, Pune, India ARTICLE INFO ABSTRACT Article history: Received 17 June 2022 Received in revised form 13 November 2022 Accepted 25 November 2022 Available online 15 December 2022 Metal matrix composites (MMCs) are attracting automobile and aeronautical sector because of their superior mechanical and physical characteristics which ultimately reduce the weight of components and hence the energy requirements. These composites are prepared by adding various reinforcements into the base metal by the methods like stir casting, squeeze casting, stir and squeeze casting, sand casting, in-setu method, powder metallurgy etc. When more than one particle is added into the base metal; these composites are called as Hybrid Metal Matrix Composites (HMMCs). The machinability of these hard to cut materials is a challenging task in front of manufacturing industry. Present study considers turning operation of HMMC done on either lathe or CNC machine by using different cutting tool materials. This review focuses on effect of various cutting parameters like speed, depth of cut, feed and also the parameters like reinforcement particle type, particle size and weight percentage on the machinability issues like surface roughness, MRR, cutting forces, tool wear etc. Further the various optimization methods used to suggest the cutting parameters to obtain minimum surface roughness, minimum cutting forces, minimum tool wear and maximum Material Removal Rate (MRR) are addressed. Keywords: Hybrid metal matrix composite; machinability; turning; cutting parameters; optimization 1. Introduction Due to their superior characteristics, such as low density, stiffness and high specific strength as well as low coefficient of expansion, hybrid metal matrix composites (HMMCs) are being employed for a variety of applications in the automotive and aerospace sectors. Composite materials are classified into two types. First type is based on matrix such as metal matrix, polymer matrix and ceramic matrix composite. Second type is based on reinforcement’s type such as particulate, fibre or whiskers. Now-a-days; particulate metal matrix composite is widely used. Particulate metal matrix composite consists of a base metal and a reinforcement particle. Base metal may consist of aluminium, magnesium etc and the reinforcement may consist of particles like silicon * Corresponding author. E-mail address: sandeep.kore@viit.ac.in https://doi.org/10.37934/arfmts.101.2.137163