Influence of Annealing Treatment on Microstructure and Mechanical Properties of Fe-Cu-Si-Al Amorphous Composites

Abstract:

In this study, the bulk amorphous alloys with 3mm in diameter were prepared at different voltages adopting copper mould suction casting method by adding microelement Al to Fe-Cu-Si based amorphous alloy respectively. The microstructures, glass-forming ability, mechanical compressive properties of (Fe_0.34Cu_0.47Si_0.19)₉₅Al₅ amorphous composites annealed in different temperature were investigated. The results showed that re-melting of master alloy refined the solidified microstructure and homogenize the composition and microstructure. Moreover, the microstructure was stable with the increase of re-melting times. After relaxation and annealing at low temperature the majority of residual thermal stress was released during annealing at low temperature, with the enlargement of short-range order of amorphous microstructure and the decrease of the most adjacent inter-atomic distance. After proper annealing treatment the hardness and thermal stability of alloy were improved, indicating that the annealing treatment could improve the properties of amorphous alloy.

• Periodical: Materials Science Forum (Volume 849)
• Pages: 71-75
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.849.71
• Online since: March 2016
• Authors: Yan Chun Zhao*, Wen Long Ma, Xiao Peng Yuan, Zhi Ping Zhao, Ming Yuan Huang, Sheng Zhong Kou, Chun Yan Li
• Keywords: Amorphous Composites, Annealing Treatment, Mechanical Properties, Microstructure

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