Thermophysical properties of multicomponent nickel-chromium alloy VSDP-3 upon melting and in the liquid phase

Abstract

The study of the high-temperature properties of a complex composition (Ni–Cr–Al–Re–Hf–Y) alloy was performed under the rapid heating of the foil by a single pulse current during a few microseconds. The alloy melted in the temperature range of 1670 to 2050 K and heated in a liquid state up to 4000 K. There were measured thermal properties (energy Joule heating, electrical resistance, and specific heat) of the alloy in the area of melting and in the liquid phase. Temperature was determined by a pyrometry system based on Thorlabs’ highspeed photodetector PDA-10A (with prior calibration of the optical path using a temperature lamp).