Dilatometric and DSC Study of the Kinetics of Discontinuous Precipitation of Ag2Al Intermetallic in Al – 10% Ag Alloy

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作者
H. Belhouchet
M. Fatmi
F. Sahnoune
M. Heraiz
N. Saheb
机构
[1] University of M’sila,Physics Department, Faculty of Science
[2] Ferhat Abbas University,Non Metallic Materials Laboratory
[3] Ferhat Abbas University,Research Unit on Engineering Materials (RUEM)
[4] King Fahd University of Petroleum and Minerals,Department of Mechanical Engineering
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关键词
alloys of the Al – Ag system; kinetics; discontinuous precipitation; activation energy; differential scanning calorimetry; dilatometry;
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摘要
The kinetics of discontinuous precipitation of Ag2Al intermetallic in alloy Al – 10% Ag is studied after 10-h holding in vacuum at 530°C and subsequent water quenching. The DSC and dilatometric curves are plotted for heating rates ranging from 5 to 20 K/min. The activation energy of formation of the Ag2Al γ-phase is computed from the DSC data with the help of the Boswell equation and by the Kissinger method.
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页码:185 / 189
页数:4
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