Effects of Primary Si and Applied Load on the Dry Sliding Wear Behaviors of Hypereutectic Al-20Si Alloy

Abstract:

The effects of the primary Si phase and applied load on the dry sliding wear behaviors of hypereutectic Al-20Si alloy were investigated. The results show that coarse polygonal and star-like primary Si was refined into fine blocky shape by increasing superheat treatment temperature. The friction coefficient and wear rate significantly decrease after decreasing the size and changing the morphology of primary Si. Moreover, the friction coefficient and wear rate increase with the increase of applied load. Therefore, the wear properties are greatly influenced by the parameters like morphology and size of primary Si as well as applied load.

• Periodical: Applied Mechanics and Materials (Volumes 490-491)
• Pages: 83-87
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.490-491.83
• Online since: January 2014
• Authors: Qing Lin Li, Tian Dong Xia, Ye Feng Lan, Yi Sheng Jian
• Keywords: Al-20Si Alloy, Applied Load, Morphology of Primary Si, Wear Behaviors

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