A review on environment friendly and lightweight Magnesium-Based metal matrix composites and alloys

Magnesium is the lightest metal known on earth has a great potential to be used as a structural alloy. The lightweight alloy and composite property attract the automobile and aerospace companies and provide an alternative to replace the denser metals such as steel, cast iron, zinc alloys and even aluminium alloys. In the present scenario of global warming and increased CO2 content, the introduction of limiting emission legislation has triggered the fascinate in magnesium alloys and its composites. Owing to lowest density, the usage of magnesium has been increased in the last decade and several programs related with processing, development, improvement in design and production field are going on to minimize the emission threat over the environment. This paper aims to discuss briefly followed by examples, the future trends, increasing use of magnesium alloys and composites and its good environmental impacts. So, it was concluded that the overall weight reduction of vehicle by using magnesium-based MMCs and its alloys elucidate the drastic enhancement in its performance in terms of mechanical and tribological behavior which consequently creates a potential for its usage in advanced manufacturing technology for automobile and aerospace sector. (C) 2020 Elsevier Ltd. All rights reserved.