Effect of silicon addition on the glass-forming ability of a Zr–Cu-based alloy
| Autor: | Riping Liu, Gong Li, Shengfeng Shan, Zaiji Zhan, W.K. Wang, Y.Z. Jia, Wang Suotao, B. Zhang |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Amorphous metal Silicon Mechanical Engineering Alloy Metallurgy Metals and Alloys Analytical chemistry chemistry.chemical_element engineering.material Copper law.invention Crystallinity Differential scanning calorimetry chemistry Optical microscope Mechanics of Materials law Materials Chemistry engineering Eutectic system |
| Zdroj: | Journal of Alloys and Compounds. 468:187-190 |
| ISSN: | 0925-8388 |
| Popis: | The effect of Si addition on the glass-forming ability (GFA) of (Zr 47 Cu 44 Al 9 ) 100− x Si x ( x = 0, 0.5, 1, 1.5, and 2.5) metallic glass alloys was investigated by using X-ray diffraction (XRD), optical microscopy, and differential scanning calorimetry (DSC). The maximum diameter of glassy rods increased from 4 mm for the Zr 47 Cu 44 Al 9 alloy to 6 mm for the (Zr 47 Cu 44 Al 9 ) 98.5 Si 1.5 alloy without detectable crystallinity when prepared using copper mould casting. Different criteria are used to evaluate the influence of Si content on the GFA. Due to the suppression of the formation of the primary CuZr phase and the induction of the composition close to the eutectic point, properly adding Si can enhance the GFA of the (Zr 47 Cu 44 Al 9 ) 100− x Si x alloy. The possible mechanisms involved in the achievement of this GFA are also discussed. |
| Databáze: | OpenAIRE |
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