Sulfide-forming Tendency of Alloying Elements in Steel

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  • Kaneko Hideo
    Department of Materials Science, Faculty of Engineering, Tohoku University
  • Nishizawa Taiji
    Department of Materials Science, Faculty of Engineering, Tohoku University
  • Tamaki Koreaki
    Department of Metallurgy, Faculty of Engineering, Nagoya University

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  • 鋼中における合金元素の硫化物形成傾向
  • コウ チュウ ニ オケル ゴウキン ゲンソ ノ リュウカブツ ケイセイ ケイコウ

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Abstract

The order of carbide-forming tendency of alloying elements in steel is of importance for explanation of the behaviour of carbide phases in alloy steels. In the same way of thinking, the sulfide-forming tendency of alloying elements in steel would be a considerable factor affecting the nature of sulfide phases in alloy steels. The present study was designed to determine the sulfide-forming tendency of individual elements in steel, and arrived at the conclusion that the tendency would be as the following order:<BR>(This article is not displayable. Please see full text pdf.) <BR>The above order was decided by chemical analysis of the individual elements in sulfide phases isolated electrolytically from sulfer-rich and carbon-free alloy steels.<BR>Ni, Co and Si have a less tendency than iron to combine as sulfide, and these elements are found only a few in iron sulfide or FeS.<BR>Those with strong or moderately strong tendency concentrate into sulfide phases, and form the special sulfides, such as ZrS, TiS, MnS, NbS, VS, CrS and Al2S3.

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