Directional solidification and phase equilibria in the Ni-Al system |
| |
| Authors: | O Hunziker W Kurz |
| |
| Affiliation: | (1) the Rolls-Royce University Technology Centre, Department of Materials Science and Metallurgy, University of Cambridge, CB2 3QZ Cambridge, United Kingdom;(2) the Laboratory of Physical Metallurgy, Department of Materials, Swiss Federal Institute of Technology, 1015 Lausanne EPFL, Switzerland |
| |
| Abstract: | A method for the optimization of a phase diagram on the basis of results from directional solidification experiments is proposed.
The experimental microstructure selection map is compared with a calculated map and the input parameters are varied until
a satisfactory agreement is obtained. The calculation of the microstructure selection map is based on the maximum temperature
criterion and on analytical models for the growth of plane front, dendritic, and eutectic structures. This method is applied
to the Ni-Al system where the phase equilibria close to the melting point of the γ′-Ni3Al phase have been subject to discussion for over 50 years. A new version of this part of the phase diagram is proposed, which
is coherent with the results from directional solidification experiments. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
