Density change upon crystallization of amorphous Zr–Cu–Al thin films

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• 作者：Qiang Guo ; Joo Hyon Noh ; Peter K. Liaw ; Philip D. Rack ; Yi Li ; Carl V. Thompson
• 关键词：Metallic glasses ; Crystallization ; Thin films
• 刊名：Acta Materialia
• 出版年：2010
• 出版时间：June 2010
• 年：2010
• 卷：58
• 期：10
• 页码：3633-3641
• 全文大小：1384 K

文摘

Systematic deflection measurements with micro-cantilevers and a combinatorial-deposition method have been used to investigate the density change upon crystallization of amorphous Zr–Cu–Al thin films. It is found that, in general, the density change decreases from Cu-/Al-rich compositions to Zr-rich compositions, and the previously reported good glass-forming compositions are found to correspond to global minima of the density change inside respective local eutectic systems. Furthermore, we propose that the general trend of density change as a function of alloy compositions discovered in this work may have implications for the macroscopic plasticity of metallic glasses.