Indentation and Friction of Cu₄₄Zr₄₃Al₁₀Nb₃ Bulk Metallic Glasses on Nano-Scale

Abstract:

Indentation and sliding friction of the as-cast, the relaxed and the crystallized Cu₄₄Zr₄₃Al₁₀Nb₃ bulk metallic glass (BMG) are investigated on nanoscale by nanoindentation. The depth, the width and the morphology of the scratches formed by the tip of the nanoindentor are different, which reflect the differences in structure, not only between the glassy and the crystallized states but also between the two glassy states, the as-cast and the relaxed. The coefficient of sliding friction of Cu₄₄Zr₄₃Al₁₀Nb₃ BMG is increased with increasing the load, and it is maximal for annealed at 683K. Improved plastic deformability is found for the relaxed one.

• Periodical: Applied Mechanics and Materials (Volumes 130-134)
• Pages: 2750-2753
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.130-134.2750
• Online since: October 2011
• Authors: Bao Ru Sun, Zai Ji Zhan
• Keywords: Bulk Metallicglasses, Nanoindentation, Sliding Friction

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