Effect of Sn on Glass Formation Ability and Crystallization Behaviors of Cu-Based Bulk Metallic Glass Alloy

Abstract:

Cu-based bulk metallic glasses (BMGs) with 5 mm in diameter were synthesized by copper mold casting. The effects of tin (Sn) addition on glass-forming ability (GFA), thermal stability of BMGs were investigated. It was found the addition of 4 at. % Sn is effective for an increase in GFA. The crystallization behaviors of Cu-based bulk metallic glasses during continuous heating are investigated mainly by differential scanning calorimeter(DSC).The results show that the characteristic temperatures(Tg,Tx and Tp) shifted to high temperature region with increasing of heating rates. The activation energies Eg, Ex and Ep, corresponding to characteristic temperatures Tg, Tx, and Tp, respectively, were obtained from Kissinger and Ozawa equations. The calculated activation energies agree well with Kissinger or Ozawa equations due to the almost invariability of the crystallization volume fraction at the characteristic temperatures for different heating rates.

• Periodical: Advanced Materials Research (Volumes 139-141)
• Pages: 102-106
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.139-141.102
• Online since: October 2010
• Authors: Deng Wei Zhang, Xin Ying Teng, Bo Li, Wen Jie Zhang
• Keywords: Activation Energy, Crystallization Behavior, Cu-Based Bulk Metallic Glass, Sn

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