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A New TEM Observation of the Copper Precipitate in High Strength Al-Cu-Mg Alloy  

Kim, Hwang-Su (Department of Physics, Kyungsung University)
Publication Information
Applied Microscopy / v.36, no.2, 2006 , pp. 47-55 More about this Journal
Abstract
In this paper a transmission electron microscope (TEM) observation of fine Cu precipitates distributed randomly in Al-2.5Cu-1.5Mg wt.% alloy is first reported. This new observation happened to occur when an ion milling was peformed to remove oxides on the specimen, particularly, aged 100 hours at $150^{\circ}C$. Meanwhile the oxides were identified to be $Cu_2O$ particles. For this work involved with analysis of diffraction rings, the formulation of the electron diffraction rings pattern for powder particles was made. Finally the significance of this unexpected ion milling effort on the alloy was discussed
Keywords
Al-Cu-Mg; Diffraction rings; Copper precipitate;
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