Effect of additives on the viscosity of molten nickel base alloys

Yuzuru Sato, Koji Sugisawa, Daisuke Aoki, Masayoshi Hoshi, Jong Il Kim, Tsutomu Yamamura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Viscosity has been measured for various molten binary alloys of nickel with iron, cobalt and chromium in order to clarify the behavior of viscous flow of molten nickel alloys. The entire concentration range for iron and cobalt and 0-67at% of chromium content were studied. The measurement method was an oscillating cup viscometry using an alumina crucible that was precisely machined. The temperature was up to about 1880K for all the measurements. The results represented good Arrhenian relationship although some measurements included overcooled temperatures. The isothermal viscosities increased monotonously with an addition of iron and chromium into nickel. The addition of cobalt increased after stationariness. The isothermal viscosities showed concave curves. Activation energies increased monotonously by adding all the elements into nickel. These phenomena were considered to be related to the thermodynamic properties such as the heat of mixing and the structures of mixture melts.

Original languageEnglish
Title of host publicationYazawa International Symposium
Subtitle of host publicationMetallurgical and Materials Processing: Principles and Techologies; Materials Processing Fundamentals and New Technologies
EditorsF. Kongoli, K. Itagaki, C. Yamauchi, H.Y. Sohn, F. Kongoli, K. Itagaki, C. Yamauchi, H.Y. Sohn
Pages417-423
Number of pages7
Publication statusPublished - 2003 Oct 16
EventYazawa International Symposium: Metallurgical and Materials Processing: Principles and Technologies; Materials Processing Fundamentals and New Technologies - San Diego, CA, United States
Duration: 2003 Mar 22003 Mar 6

Publication series

NameYazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Materials Processing Fundamentals and New Technologies
Volume1

Other

OtherYazawa International Symposium: Metallurgical and Materials Processing: Principles and Technologies; Materials Processing Fundamentals and New Technologies
Country/TerritoryUnited States
CitySan Diego, CA
Period03/3/203/3/6

ASJC Scopus subject areas

  • Engineering(all)

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