| Abstract |
| The microstructural changes under varying temperature conditions of Cu-15 wt%Nb filamentary nanocomposite fabricated by the bundling and drawing process were characterized using transmission electron microscopy(TEIVI). In the sample heat treated at 400℃, twin bands were observed in a subelemental wire with the Nb filaments acting as barriers to twin propagation, and the multi-twins having {111} twin planes were observed in Cu sheath. The spheroidzation of Nb filaments appears in specimen heat treated at 500℃. Nb filaments completely transformed into spherical particles in the sample heat treated 700℃, and the amorphous layers with 4 nm in width were observed at the interface of Nb particles and the Cu matrix. The texture of the Cu matrix(<100> and <111>) and Nb particles(<110>) remains unchanged following annealing at 700℃. (Received March 12, 2004) |
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| Key Words |
| Cu-Nb filamentary nanocomposite, Transmission electron microscopy, Multi-twin structure, Spherical Nb particles, Amorphous layers |
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