鋼中の硫化物に関する状態図の検討

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タイトル別名
  • Study on Phase Diagram of Sulfides in Steel
  • コウ チュウ ノ リュウカブツ ニ カンスル ジョウタイズ ノ ケントウ

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The principal phase diagrams of ternary system Fe-M-S have been established by Vogel and other investigators, but some of these diagrams are questionable so far as phase relationships of sulfides in steel are concerned. In the present research, chemical composition and crystal structure of sulfides in ternary alloys having Fe-0.5%S as a base were examined by electrolytic isolation and by subsequent chemical and X-ray analyses. And the sulfide phase diagrams which represented sulfide phases existing at equilibrium with iron phase in ternary systems were determined. The sulfide phase diagrams are divided into following groups:<BR>(1) FeS and other binary sulfides are in equilibrium with iron phase in Fe-Zr-S, Fe-Ti-S, Fe-Mn-S, Fe-Nb-S and Fe-Al-S systems.<BR>(2) Binary sulfides except FeS are not existent in equilibrium with iron phase in Fe-Mo-S, Fe-W-S and Fe-Ni-S systems.<BR>(3) CrS, VS and CoS form a continuous solid solution with FeS. Cr and V concentrate into the sulfide solid solution in Fe-Cr-S and Fe-V-S systems. The reverse is the case in Fe-Co-S system.<BR>The sequence of the formation of sulfide inclusions during freezing of steel were discussed on the basis of the phase diagrams of iron-sulfide pseudo-binary systems.

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  • 日本金属学会誌

    日本金属学会誌 27 (7), 312-318, 1963

    公益社団法人 日本金属学会

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