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Effect of melt superheating treatment on the cast structure of K465 nickel-based superalloy

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Abstract

The cast structure of a K465 nickel-based superalloy with different temperatures of melt superheating treatment was studied. It is shown that melt superheating treatment plays a significant role in the grain size and carbide morphology. With increasing melt superheating temperature (below 2023 K), the grain size increases obviously and the carbide morphology is changed from a blocky to a script-like shape. However, when the melt superheating temperature is between 2023 K and 2123 K, the grain size decreases gradually, and the morphology of the MC carbide changes back to the blocky appearance. The content of W is also influenced by melt superheating treatment.

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Authors and Affiliations

  1. School of Material and Metallurgy, Northeastern University, Shenyang, 110004, China

    Zhongye Pei & Yanwen Tian

  2. High Temperature Materials Research Division, Central Iron and Steel Research Institute, Beijing, 100081, China

    Zhongye Pei, Minghan Zhao, Juntao Li, Xingfu Chen & Jiantao Wu

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  1. Zhongye Pei
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  2. Minghan Zhao
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  3. Yanwen Tian
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  4. Juntao Li
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  5. Xingfu Chen
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  6. Jiantao Wu
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Correspondence to Zhongye Pei.

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Pei, Z., Zhao, M., Tian, Y. et al. Effect of melt superheating treatment on the cast structure of K465 nickel-based superalloy. Rare Metals 28, 193–196 (2009). https://doi.org/10.1007/s12598-009-0038-y

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  • DOI: https://doi.org/10.1007/s12598-009-0038-y

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