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：李祥

机构：[1] Department of Materials & Metallurgy Engineering, Guizhou Institute of Technology, Guizhou, Guiyang, 550003, 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：2023

外文期刊名：Ceramics International

收录：EI(收录号：20232714353334);Scopus(收录号：2-s2.0-85163860200)

语种：英文

外文关键词：Adhesives - Alumina - Aluminum oxide - Dissolution - Energy dispersive spectroscopy - Erosion - Melting - Nickel alloys - Scanning electron microscopy - Superalloys

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 (SEMEDS). 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 Ni-based 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 μm2 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 μm- 23 μm)2O3-based refractory (93 μm- 285 μm) ? 2023 Elsevier Ltd and Techna Group S.r.l.