A Study on the Disordering Process in Cu<SUB>3</SUB>Au Alloy by Electrical Resistivity Measurements

• Yokoyama Toru

  Department of Mechanical Engineering, Faculty of Engineering, Yokohama National University

• Sato Kenzi

  Fukushima Technical College

抄録

In the specific heat curve of Cu₃Au ordered alloy, an unexpected bump is shown at about 320°C in addition to the order-disorder transition at 390°C. A similar anomaly has also been found in FeCo alloy at about 550°C, the origin of which is clarified by Yokoyama et al. We applied the same procedure as employed in FeCo alloy to Cu₃Au alloy with a face-centered cubic structure and investigated in detail the disordering process by measurements of electrical resistivity. Changes in resistivity as a function of temperature at the heating rates, 2°C/min and 20°C/35 hr (very slow rate), were also obtained by applying Bragg-Williams’ equation for the rate of approach to the equilibrium state. The anomaly at about 320°C does not occur in the equilibrium state, and it is considered to be caused by the heating rate too high compared with the diffusion rate, just as in the case of FeCo alloy.

収録刊行物

• Transactions of the Japan Institute of Metals

  Transactions of the Japan Institute of Metals 13 (5), 327-331, 1972

  社団法人 日本金属学会

キーワード

• General Engineering

詳細情報

• CRID: 1390001205116943616
• NII論文ID: 130003485169
• DOI: 10.2320/matertrans1960.13.327
• ISSN: 24324701
• ISSN: 00214434
• Web Site: https://www.jstage.jst.go.jp/article/matertrans1960/13/5/13_5_327/_pdf
• 本文言語コード: en
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