**1. Introduction**

During the past decades, significant research has been carried out on the development of novel magnesium-based materials as traditional alloys and composites using different techniques such as casting, powder metallurgy, disintegrated melt deposition etc.; several secondary processing techniques have also been used to enhance the physical and mechanical properties of Mg-based materials, namely, heat treatment, equal channel angular pressing (ECAP), forging, rolling, hot extrusion, etc. Mg-based materials have turned out to be a choice for industries to replace structural materials like cast iron, steel, copper, etc. In particular, automobile industries have become potential market for Mg-based materials. Increase in demand for Mg-based materials for lightweight automotive components witnessed significant growth during recent years. Global forecast report has estimated Mg alloys market to reach 1.30 billion in 2018 and is projected to reach USD 2.37 billion by 2023 at a compound annual growth rate (CAGR) of 12.7% during forecast period [1]. Extended applications in 3Cs (consumer electronics, computers, and cell phones) have enhanced the demand and growth of Mg-based materials in global markets. With this increase in demand, researchers and engineers are continuously focusing on machining aspects of Mg-based materials to expand the industrial applications through advanced machining technologies.
