文献类型：期刊文献

英文题名：New insights on Interaction between Refractory and Inclusion in K4169 Nickel-based Superalloy

作者：Li, Xiang Long, Likun Wang, Linzhu Chen, Chaoyi Li, Junqi

第一作者：李翔

机构：[1] School of Materials and Energy Engineering, Guizhou Institute of Technology, Guizhou, Guiyang, 550025, China; [2] School of Materials and Metallurgy, Guizhou University, Guizhou, Guiyang, 550025, China

第一机构：贵州理工学院

年份：2025

外文期刊名：SSRN

收录：EI(收录号：20250572913)

语种：英文

外文关键词：Aluminum oxide - Coarsening - Inclusions - Nickel - Nickel alloys - Potassium alloys - Superalloys

摘要：The interaction between refractory and inclusions in Ni-based superalloys during melting plays a critical role in alloy performance. To clarify the influence of refractory on inclusion characteristics, K4169 Ni-based superalloys was melted in laboratory tube furnaces using crucibles made of Y2O3-based, MgO-based, and Al2O3-based refractories. The results indicate a clear correlation between inclusion types and refractory composition. Al2O3 inclusions predominated melted with Y2O3-based and Al2O3-based refractory, whereas MgO·Al2O3 composite inclusions formed when MgO-based refractory were used. It indicated that alloys melted in Y2O3-based refractory contained the lowest inclusion number density with a uniform distribution. Furthermore, capillary force between refractories and inclusions was predicted based on Kralchevsky–Paunov (K–P) model and it followed the order: MgO-based > Al2O3-based > Y2O3-based. This trend was consistent with the experimentally observed inclusion characteristics, confirming that capillary force is a key factor affecting inclusion aggregation and their characteristics. In summary, Y2O3-based refractory demonstrate relatively weak interactions with the inclusion, which mitigates inclusion aggregation and coarsening. ? 2025, The Authors. All rights reserved.