Density, Surface Tension, and Viscosity of Molten Ni-Based Superalloys Using the Maximum Bubble Pressure and Oscillating Crucible Methods

Tsuyoshi Nishi, Saori Matsumoto, Hidemasa Yamano, Kiichiro Hayashi, Rie Endo, Matheus Roberto Bellé, Lukas Neubert, Olena Volkova

研究成果: Article査読

抄録

Accurate data on the high-temperature thermophysical properties, which are density, surface tension, and viscosity, are indispensable for performing high-precision casting simulations of Ni-based superalloys. Viscosity is the most important thermophysical property for thermofluidic analysis. However, measuring the viscosity of an alloy, which is lower than that of molten glass, is difficult, and experimental viscosity data are limited. Herein, the density of Ni-based superalloys is measured using the maximum bubble pressure (MBP) method to determine viscosity. The viscosity is evaluated using the oscillating crucible method. The surface tension is simultaneously measured using the MBP method. In these results, the average density values [kg m−3] of Alloy 65, Alloy 718, Alloy WA, and Alloy 720 are 7.52 × 103, 7.43 × 103, 7.82 × 103, and 7.52 × 103, respectively. The average surface tension values [N m−1] of Alloy 65, Alloy 718, Alloy WA, and Alloy 720 are 1.55, 1.54, 1.47, and 1.51, respectively. The fitting equations of the molten Ni-based superalloys are as follows. 1) Alloy 65: (Formula presented.); 2) Alloy WA: (Formula presented.); 3) Alloy 720: (Formula presented.); 4) Alloy 718: (Formula presented.).

本文言語English
ジャーナルSteel Research International
DOI
出版ステータスAccepted/In press - 2024

ASJC Scopus subject areas

  • 凝縮系物理学
  • 物理化学および理論化学
  • 金属および合金
  • 材料化学

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