Precipitation Behavior of TiN in Fe-10mass%Ni Alloy during Solidification and Isothermal Holding at 1400℃
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概要
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The precipitation of TiN during solidification and holding at 1400°C has been studied in an Fe–10mass%Ni alloy as a function of initial contents of Ti and N and holding time. Dendritic and nondendritic (globular cell) zones are observed under the condition of the undercooling of 5 to 35°C. The number of particles per unit area, NA, in nondendritic zone is significantly smaller than that in dendritic zone and the NA values in both zones increase with holding time. The values for mean particle diameter, dA, remain unchanged in dendritic zone with holding time, while the dA values decrease with holding time in nondendritic zone. In dendritic and nondendritic zones, the degree of precipitation of TiN particles increase with increasing area fraction of solid, fS, and the degree of precipitation depends on initial contents of Ti and N. The dA value in nondendritic zone, which is independent of fS, is larger than that in dendritic zone at zero holding time for a given initial content.
- 社団法人 日本鉄鋼協会の論文
- 2001-07-15
著者
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Suito Hideaki
Institute For Advanced Materials Processing Tohoku Unibersity
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RERVUSHIN Georgy.
Institute for Advanced Materials Processing, Tohoku Unibersity
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Rervushin Georgy.
Institute For Advanced Materials Processing Tohoku Unibersity
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