Influence of Isothermal Annealing on the Micro-Hardness and Friction Property in CuZrAl Bulk Metallic Glass

Abstract:

A Cu55Zr40Al5 bulk metallic glass (BMG) was prepared by using copper-mold suction-casting and the structure and thermal stabilities of the amorphous alloy as well as the effect of isothermal annealing on its micro-hardness and friction property were studied. The results showed the glass transition temperature, onset temperature of exothermic reaction, and temperature interval of supercooled liquid region are 746.8 K, 793.5 K and 46.7 K, respectively. The BMG exhibits a micro-hardness value of 483.5 Hv and an average friction coefficient of 0.495. After isothermal annealing treatment, the micro-hardness has been enhanced and presents an upward trend with increasing the annealing temperatures. Meanwhile, the friction coefficients can be significantly decreased and the anti-wear property has been enhanced evidently.

• Periodical: Advanced Materials Research (Volumes 146-147)
• Pages: 615-618
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.146-147.615
• Online since: October 2010
• Authors: Ping Jun Tao, Yuan Zheng Yang, Xiao Jun Bai, Jian Guo Wen, Qiang Ru
• Keywords: Bulk Metallic Glass (BMG), Mechanical Property, Surface Friction, Wear Behaviour

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