Glass Formation and Thermal Stability of Mechanically Alloyed Al₇₅Ni₁₀Ti₁₀Zr₅ Amorphous Composites with Graphene Addition

Abstract:

In this study, the influence of 0.5 wt.% graphene (Gr) addition on the glass formation and thermal stability of the Al₇₅Ni₁₀Ti₁₀Zr₅ alloy during mechanical alloying (MA) process has been investigated. The as-milled products consist of the amorphous phase and a small amount of the AlNi nanocrystals. The results showed that the 0.5 wt.% Gr addition could shorten the amorphization process, indicating the enhancement of the glass forming ability. Moreover, the onset crystallization temperature (T_x1) slightly decreased with prolonging milling time for the as-milled alloys. However, it is worth noting that the Gr addition effectively increased the T_x1 of the as-milled Al-based amorphous composites for the long duration of MA time. The T_x1 values of the as-milled AlNiTiZrGr amorphous composites were more than 1120 K, exhibiting the highly thermal stability.

• Periodical: Materials Science Forum (Volume 849)
• Pages: 58-63
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.849.58
• Online since: March 2016
• Authors: Tong Yang Wang, Zhen Xi Sun, Lan Xiang Zhang, Yan Wang
• Keywords: Al-Based Amorphous Composites, Glass Formation, Graphene, Mechanical Alloying, Thermal Stability

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