Devitrification of Zr-Ni-Al-Cu-Ti(Nb,Ta) glassy alloys

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• 作者：Ouyang ; L.J. ; Louzguine ; D.V. ; Kimura ; H.M. ; Ohsuna ; T. ; Inoue ; A.
• 关键词：A. Alloy ; A. Quasicrystals ; C. Differential scanning calorimetry
• 刊名：Materials Research Bulletin
• 出版年：2004
• 期刊代码：60_00255408
• 类别：ms
• 出版时间：July 2, 2004
• 卷：39
• 期：9
• 页码：1345-1350
• 文件大小：166 K

摘要

The devitrification behavior and phase formation in Zr_65–55Ni₁₀Al_7.5Cu_7.5Ti_5–10(Nb,Ta)_5–10 metallic glass have been studied by X-ray diffraction, transmission electron microscopy and differential scanning calorimetry. It has been found that mutual addition of Ti and Ta/Nb benefits the formation of nanoscale icosahedral phase in the glassy phase on heating and the oxygen content in the alloy makes significant influence on the devitrification behavior of these alloys. At the same time in Nb-bearing alloys and alloys containing 5at.%Ta icosahedral phase was found to coexist with crystalline one.