Thermophysical properties of the Zr-0.01 Nb alloy at various heating rates and repeated cycles of heating-cooling
The results of an experimental study of the heat capacity, enthalpy, electrical resistivity, and spectral emissivity (for the wavelength of 0.65 {micro}m) of the Zr-0.01 Nb alloy in the temperature range from 900 to 2,000 K are presented. The study was carried out using subsecond pulse heating of the samples by passing electrical current through them. Experiments were conducted at different heating rates (10{sup 3} to 10{sup 4} K {center{underscore}dot} s {sup minus}{sup 1}) and a series of experiments consisted of several cycles of pulse heating and subsequent cooling. The effect of these parameters on the temperature dependence of thermophysical properties in the region of the {alpha}-{beta} transition was studied. With an increase in the heating rate, the temperature of the {alpha}-{beta} transition, and the maximum in the heat capacity shifted to higher temperatures. There are significant differences in properties over the temperature range of the {alpha}-{beta} transition for the various heating cycles.
- Research Organization:
- High Energy Density Research Center, Moscow (RU)
- OSTI ID:
- 20005515
- Journal Information:
- International Journal of Thermophysics, Vol. 20, Issue 4; Conference: Fifth International Workshop on Subsecond Thermophysics, Aix-en-Provence (FR), 06/16/1998--06/19/1998; Other Information: PBD: Jul 1999; ISSN 0195-928X
- Country of Publication:
- United States
- Language:
- English
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