Study of the structure and properties of Al-Cu alloys (up to 10 at.% Cu) produced at different cooling rates

Authors

  • Svetlana Gennadievna Menshikova Physical-Technical Institute, Ural Branch of RAS, 132 Kirova Str., 426000 Izhevsk, Russia
  • Irina Gennadievna Brodova M.N. Miheev Institute of Metal Physics, Ural Branch of RAS, Yekaterinburg, Russia
  • Tatyana Ivanovna Yablonskih M.N. Miheev Institute of Metal Physics, Ural Branch of RAS, Yekaterinburg, Russia
  • Vladimir Vladimir Astafyev

Abstract

In this study, we have used durametry, X-ray phase analysis and metallographic analysis to observe the structure and properties of Al-Cu alloys (2, 5, 7 and 10 at.% Сu) cooled down from melt, at rates of 2 and 100 degrees/s and within a temperature range 973 to 1473 К. Each sample includes two phases: α-Al and Al2Cu. The study demonstrates that a growing Cu concentration and a growing cooling rate increase the microhardness of the groundmass metal (α-Al); the dendrite parameters of α-Al and the eutectic mixture volume ratio are also changed.

 

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Published

2016-12-14

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Articles