Analysis of phase formation in Ni-rich alloys of the Ni–Ta–W system by calorimetry, DTA, SEM, and TEM

Autor: Witusiewicz, Victor T., Hecht, Ulrike, Warnken, Nils, Fries, Suzana G., Hu, Weiping
Zdroj: International Journal of Materials Research: Zeitschrift fuer Metallkunde; January 2022, Vol. 97 Issue: 4 p440-449, 10p
Abstrakt: The partial enthalpies of dissolution of pure Ni,Wand Ta in liquid ternary Ni –Ta –W alloys have been determined at (1773 ± 5) K using a high temperature isoperibolic calorimeter. Measurements were performed in Ni-rich alloys (from 80 to 100 at.% Ni) along sections with constant Ta .W atomic ratios 1 : 0, 2 : 1, 1 : 2, and 0 : 1. The partial enthalpies and thereby the integral enthalpy of mixing of these ternary alloys are calculated from the partial enthalpies of dissolution using SGTE Gibbs energies for pure elements as reference.
Databáze: Supplemental Index