鉄基合金デンドライトの一次アームの間隔におよぼす合金元素の影響

概要

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The influence of the solidification rate R, the temperature gradient G and the kind and amount of solute on primary dendrite arm spacing are investigated in unidirectionally solidified Fe-C, Fe-P, Fe-0.5%C-P and Fe-0.5%C-S alloys. The effects of the kind and amount of solute on primary dendrite arm spacing are discussed on the basis of Okamoto-Kishitake's equation. The results are summarized as follows. 1) Nearly linear relation is obtained between primary dendrite arm spacing and G^<-0.4>R^<-0.2> in Fe-C alloy as well as stainless and Cr-Mo steels. 2) Primary dendrite arm spacings in Fe-C and Fe-P alloys slightly increase as the solute contentincreases. 3) Primary dendrite arm spacings in Fe-0.5%C-P and Fe-0.5%C-S alloys are not affected by phosphorus and sulfur content. 4) The effects of the kind and amount of solute on primary dendrite arm spacing can be almost explained by Okamoto-Kishitake's equation in iron-base alloys as well as aluminium alloys.
社団法人日本鉄鋼協会の論文
1977-09-01