Tribological Behavior of Mg-Mg₂Si In Situ Composite

Abstract:

Mg-Mg₂Si in-situ composites by the addition of Si in Mg have become more attractive since the Mg₂Si phase impedes the grain boundary sliding at elevated temperature because of its inherent properties which greatly improve the heat and wear resistances. In the present work, Mg-Mg₂Si composites have been prepared by the liquid state processing with different amount of silicon additions. The microstructure and dry sliding tribological behavior of the composites have been studied. SEM studies reveal the wear mechanisms involved in these composites. The results indicate that wear rate of the composites is a function of Mg₂Si content in the composite. The effect of Mg₂Si morphology and distribution on the overall mechanism is also discussed.

• Periodical: Materials Science Forum (Volume 710)
• Pages: 401-406
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.710.401
• Online since: January 2012
• Authors: Kumaraswamy Kaliamma Ajith Kumar, Uma Thanu Subramonia Pillai, Bellambettu Chandrasekhara Pai, Madhusudan Chakraborty
• Keywords: Dry Sliding Wear, Hardness, Mg-Mg₂Si Composite, Mg-Si Alloy, Tribological Behavior

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