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자료유형
학술저널
저자정보
Shaofeng Chen (Chinese Academy of Sciences) Naicheng Sheng (Chinese Academy of Sciences) Shigang Fan (Chinese Academy of Sciences) Shijie Sun (Chinese Academy of Sciences) Guichen Hou (Chinese Academy of Sciences) Jinguo Li (Chinese Academy of Sciences) Lirong Liu (Shenyang University of Technology) Yizhou Zhou (Chinese Academy of Sciences) Xiaofeng Sun (Chinese Academy of Sciences)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.28 No.12
발행연도
2022.12
수록면
2,962 - 2,971 (10page)
DOI
10.1007/s12540-022-01193-w

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The effects of sulfur on the microstructures and solidification characteristics of a second-generation single crystal superalloywere clarified through optical microscope (OM), scanning electron microscope (SEM), differential scanning calorimetry(DSC) and electron probe microanalysis (EPMA). When sulfur was added to the alloy, the area fraction of theeutectic and microporosity decreased with the area fraction of MC carbides increasing. The γ / γ’ eutectic morphologychanged from mosaic + fan + coarse γ’ to mosaic + fan as the sulfur content increased, and very few γ / γ’ eutectic wasfound in the alloy with the highest sulfur content. Moreover, sulfur tended to segregate at the interdendritic regions andform Hf / Cr- rich sulfides, which were adjacent to the carbides or eutectic. This work not only uncovers some sulfideswrapped by eutectic or carbides, but also presents the solidification sequence of the interdendritic regions in high sulfurcontent alloy was discussed.

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