The Aging Characteristics of Magnesium-4wt% Zinc Alloy

• Mima Genjiro

  Faculty of Engineering Osaka University

• Tanaka Yasuzô

  Graduate School, Osaka University

抄録

The aging characteristics of a magnesium-4wt% zinc alloy were studied over a temperature range of 0°∼200°C by means of electrical resistivity and hardness measurements, the X-ray Debye-Scherrer method and electron-microscopic observations.<BR>From the kinematic point of view the aging sequences were analyzed using the C-curve obtained by plotting the logarithm of the incubation time as a function of the reciprocal of the absolute aging temperature. The results showed that the aging sequences varied with the three different temperature ranges, viz., above 110°, 110°∼60°C and below 60°C. The presence of the following three stages in the aging sequences above 110°C were also confirmed by X-ray analysis and electron microscopic observations; supersaturated solid solution→pre-β′→β′→β(MgZn). The apparent activation energy calculated from the slope of the linear part of the C-curve was about 29 kcal/mol for β′ precipitates and about 24 kcal/mol for pre-β′ precipitates. The aging sequences in the temperature ranges of 110°∼60°C and below 60°C may be characterized by the formation of G. P. zones.

収録刊行物

• Transactions of the Japan Institute of Metals

  Transactions of the Japan Institute of Metals 12 (2), 71-75, 1971

  社団法人 日本金属学会

キーワード

• General Engineering

詳細情報

• CRID: 1390282680093878016
• NII論文ID: 130003485077
• DOI: 10.2320/matertrans1960.12.71
• ISSN: 24324701
• ISSN: 00214434
• Web Site: https://www.jstage.jst.go.jp/article/matertrans1960/12/2/12_2_71/_pdf
• 本文言語コード: en
• データソース種別:
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