Precipitation Behavior of Al-Ti-O-N Inclusions in Unidirectionally Solidified Fe-30mass%Ni Alloy
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概要
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The composition, size, morphology and distribution of the Al-Ti-O-N inclusions in the unidirectionally solidified Fe-30mass%Ni alloy were studied under the different solidification conditions as a function of solute contents which were controlled by using the CaO-Al<SUB>2</SUB>O<SUB>3</SUB>-TiO<I><SUB>x</SUB></I>-TiN slags. The TiO<I><SUB>x</SUB></I>-Al<SUB>2</SUB>O<SUB>3</SUB> inclusions were observed in the initial contents of Ti=20-110 and N=60-130, while the TiN inclusions were observed in the initial contents of Ti=700-1100 and N=90-150 on mass ppm base. The Ti content and the size of the TiO<I><SUB>x</SUB></I>-AL<SUB>2</SUB>O<SUB>3</SUB> inclusions increased with an increase in the cooling rate. The TiO<I><SUB>x</SUB></I>-rich TiO<I><SUB>x</SUB></I>-Al<SUB>2</SUB>O<SUB>3</SUB> and the TiN inclusions were located in last stage of solidification in the interdendritic and the intercellular region. The precipitation of TiN and TiO<I><SUB>x</SUB></I>-Al<SUB>2</SUB>O<SUB>3</SUB> inclusions was discussed by using the segregation models.
- 社団法人 日本鉄鋼協会の論文
- 1995-12-15
著者
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Suito Hideaki
Institute For Advanced Materials Processing Tohoku University
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KAWASHITA Yoshio
Tohoku University
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Suito Hideaki
Institute For Advanced Materials Processing Tohoku Unibersity
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