Solidification Atmosphere and Glass-Forming Ability of Engineering Important Fe- and Zr-Based Bulk Glassy Alloys

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• 作者：A. Inoue ; F. L. Kong ; F. Al-Marzouki
• 关键词：Solidification condition ; Copper mold casting ; Glass ; forming ability ; Engineering bulk glass ; Helium ; Oxygen
• 刊名：Transactions of the Indian Institute of Metals
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：68
• 期：6
• 页码：1131-1136
• 全文大小：1,304 KB
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• 作者单位：A. Inoue (1) (2) (3)
  F. L. Kong (2)
  F. Al-Marzouki (3)
  
  1. School of Materials Science and Engineering, Tianjin University, Tianjin, China
  2. International Institute of Green Materials, Josai International University, Togane, 283-8555, Japan
  3. Department of Physics, King Abdulaziz University, Jeddah, 22254, Saudi Arabia
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science
  Metallic Materials
  Materials Science, general
  Tribology, Corrosion and Coatings
  
• 出版者：Springer India
• ISSN：0975-1645

文摘

It is important to clarify the best solidification condition for the formation of bulk glassy alloys in Fe- and Zr-based alloy systems with engineering values. The effectiveness of atmosphere during injection casting changes in the order of O₂ > Air > N₂ > Ar > He for Fe₇₆Si₉B₁₀P₅ bulk glassy alloy and 105 Pa He > 105 Pa Ar > 103 Pa Ar > vacuum for Zr₆₅Al_7.5Ni₁₀Cu_17.5?xPd_x (x = 0-7.5 %) bulk glassy alloys. The effectiveness of oxygen atmosphere is due to the suppression of crystal nucleation rate caused by the increase in surface tension of liquid by the dissolution of oxygen in case of Fe-based alloy. In case of Zr-based bulk glassy alloys, the He atmosphere is effective due to the maintenance of cleanness of alloy liquid as well as the increase in the cooling rate. The opposite tendency of the effectiveness for helium atmosphere in the same injection casting is important for further development of the production techniques for large-scale Fe- and Zr-based bulk glassy alloys. Keyword Solidification condition Copper mold casting Glass-forming ability Engineering bulk glass Helium Oxygen