文献类型：期刊文献

英文题名：Study on the stability of different refractories during the melting process of a K4169 Ni-based superalloy

作者：Li, Xiang Zhao, Yudong Wang, Linzhu Long, Xiao Chen, Chaoyi Qin, Zhuo

第一作者：李翔

通信作者：Long, X[1];Wang, LZ[2]

机构：[1]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Guizhou, Peoples R China;[2]Guizhou Univ, Sch Mat & Met, Guiyang 550025, Guizhou, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Guizhou, Peoples R China;corresponding author), Guizhou Univ, Sch Mat & Met, Guiyang 550025, Guizhou, Peoples R China.|贵州理工学院;

年份：2023

卷号：49

期号：18

起止页码：29573-29583

外文期刊名：CERAMICS INTERNATIONAL

收录：;EI(收录号：20232714353334);Scopus(收录号：2-s2.0-85163860200);WOS:【SCI-EXPANDED(收录号:WOS:001148638300001)】；

基金：This research is supported by the National Natural Science Foundation of China (Nos. 52264041, 52064011 and 52274331) and the Science and Technology Planning Project of Guizhou (Nos. Qian Ke He Ji Chu-ZK [2021]258 and Qian Ke He Zhi Cheng [2021]342). Additionally, this project is supported by the research program for talented scholars of the Guizhou Institute of Technology with grant No. XJGC20190962 and Research Foundation of State Key Laboratory of New Technology of Iron and Steel Metallurgy, University of Science and Technology Beijing with grant No.K23-04.

语种：英文

外文关键词：Cleanliness; (B) X-ray methods; (D) Y (2) O (3); (D) MgO

摘要：The composition of the refractory strongly affects the cleanliness of the alloy. K4169 Ni-based superalloys were melted in different types of refractories in this study. The cleanliness of the Ni-based superalloy and phase transformation of the refractory were observed by X-ray fluorescence (XRF), X-ray diffraction (XRD), and scanning electron microscopy energy dispersive spectroscopy (SEM-EDS). The high-temperature stabilities of a Y2O3-based refractory, MgO-based refractory, and Al2O3-based refractory during melting with a Ni-based alloy were compared. The oxygen content was also lowest, and no Y2O3-containing inclusions were observed in the Nibased alloy melted with the Y2O3-based refractory at 1823 K. Inclusions with 21%-29% MgO and a phase composed of Al, Mg and O with an area of approximately 1300 mu m(2) were observed in the alloy. This indicates that the dissolution and erosion of the Y2O3-based refractory were weak, and obvious physical erosion and chemical dissolution of the MgO-based refractory occurred during the melting process of the Ni-based alloy. The width of the refractory phase adhered to the boundary of the Ni-based alloy increased in the order Y2O3-based refractory (15 mu m- 23 mu m)< Al2O3-based refractory (93 mu m- 285 mu m)< MgO-based refractory (3.5 mm-3.6 mm), indicating that the adhesive strength of the MgO-based refractory with the Ni-based alloy was strongest. The interaction between the refractory material, Ni-based alloy and inclusions was analyzed based on thermodynamic calculations by Factsage software. The effects of dissolution of the three refractory types on the formation and transformation of the new phases and inclusions were estimated. The thermodynamic results were in good agreement with the experimental results.