TEM study on a new Zr-(Fe, Cu) phase in furnace-cooled Zr-1.0Sn-0.3Nb-0.3Fe-0.1Cu alloy
Abstract
A new Zr-(Fe, Cu) phase was found in furnace-cooled Zr-1.0Sn-0.3Nb-0.3Fe- 0.1Cu alloy and alloys aged at 580 °C for 10min, 2 h and 10 h. Electron diffraction experiment shows the crystal structure of this phase to be body-centered tetragonal with unit cell dimensions determined to be a = b = 6.49 Å, c = 5.37 Å. Its possible space groups have been discussed and the reason accounting for its formation is believed to be the addition of Cu according to the atom-level images. In addition, no crystal structural or chemical composition changes were observed throughout the aging process.
- Publication:
-
Journal of Nuclear Materials
- Pub Date:
- June 2018
- DOI:
- 10.1016/j.jnucmat.2018.03.008
- Bibcode:
- 2018JNuM..504...79L
- Keywords:
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- Zirconium alloy;
- Precipitates;
- Transmission electron microscopy;
- Electron diffraction;
- Crystal structure