Mechanical, wear and corrosion properties of micro particulates reinforced ZA-27 hybrid MMC by stir casting: A review

During the last few years, ZA-27 alloys are commercially used as a bearing material due to their excellent tribological properties. This alloy also possesses advantages like good mechanical properties, low energy consumption, and ease of machining. It is found that ZA-27 alloys lose their dimensional stability above 100 degrees C during its usage. This has inspired many researchers in recent years to explore the possibility of reinforcing ZA-27 alloy with synthetic ceramic reinforcement like SiC, Alumina, boron carbide Agricultural and industrial wastes along with solid lubricant such as graphite for tribological applications. This article reviews the microstructure, physical, mechanical, wear, and corrosion properties of ZA-27 hybrid MMC reinforced with microparticles like SiC, and Alumina, Rice husk ash, Groundnut ash, Quarry dust, and Bamboo leaf ash fabricated by stir casting technique. This paper summarizes the work done by several researchers in optimizing the stirring parameters for better distribution of microparticulate reinforcements and mechanical, corrosion and wear behavior of the hybrid ZA-27 composites. (c) 2021 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the 3rd International Conference on Materials, Manufacturing and Modelling.

Automated summary

ZA-27 alloys are commercially used as bearing materials for their excellent tribological properties, but researchers are exploring the possibility of reinforcing them with synthetic ceramics and solid lubricants to address dimensional stability issues. ZA-27 hybrid MMCs reinforced with microparticles like SiC and Alumina, fabricated by stir casting technique, show potential in improving mechanical, corrosion, and wear behavior.