文献类型：期刊文献

英文题名：Influence of Zr addition on the characteristics and formation mechanism of inclusions in K4169 nickel-based superalloy

作者：Liu, Huanmei Wang, Linzhu Long, Likun Zeng, Fansheng Li, Junqi Chen, Chaoyi Li, Xiang Ran, Xing

第一作者：Liu, Huanmei

通信作者：Wang, LZ[1];Li, X[2];Ran, X[3]|[14440b064bd9b7e3217ac]李翔;[1444047823bfb411b7e75]李翔;

机构：[1]Guizhou Univ, Coll Mat & Met, Guiyang 550025, Peoples R China;[2]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550025, Peoples R China;[3]AVIC Heavy Machinery Co Ltd, Guiyang 550000, Peoples R China

第一机构：Guizhou Univ, Coll Mat & Met, Guiyang 550025, Peoples R China

通信机构：corresponding author), Guizhou Univ, Coll Mat & Met, Guiyang 550025, Peoples R China;corresponding author), Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550025, Peoples R China;corresponding author), AVIC Heavy Machinery Co Ltd, Guiyang 550000, Peoples R China.|贵州理工学院;

年份：2026

卷号：1051

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20260319911906);Scopus(收录号：2-s2.0-105027297947);WOS:【SCI-EXPANDED(收录号:WOS:001665788500001)】；

基金：This research was supported by the National Natural Science Foun-dation of China (Nos. 52264041 and 52274331) and Natural Science Foundation of Guizhou Province (Qian Ke He Ji Chu-ZK [2023] Zhong Dian 020) . Additionally, this work was supported by Guizhou Basic Research Program (Natural Science) Talent Team Lift Project (QNB [2025] 005) , Guizhou Provincial Young Elite Scientist Sponsorship Program (No. Gastyess202405) , Key Scientific Research Project Plan of Higher Education Institutions in Henan Province (No.24B450003) and Major Science and Technology Special Project of Guizhou Province (Qian Ke He Ren Cai XKBF [2025] 008) .

语种：英文

外文关键词：Nickel-based superalloys; Zr content; Inclusions; FactSage thermodynamic calculation; First-principles calculation

摘要：The present study aims to investigate the effect of zirconium (Zr) addition on the characteristics and formation mechanisms of inclusions in K4169 nickel-based superalloy. Inclusions transform from Al2O3 and Al2O3-TiN to ZrO2-TiN with Zr content increasing from 0 to 0.11 wt%, and the FactSage Thermodynamic Calculation results further indicate that the dominant oxide will change from Al2O3 to ZrO2 when the Zr content exceeds 0.083 wt%. Moreover, the number density, average equivalent diameter (deq) and area fraction (Af) of oxide and composite inclusions are all significantly reduced when the Zr content is at 0.092 and 0.11 wt%, respectively. First-principles Calculation results show that t-ZrO2 has a weaker binding capacity with TiN than alpha-Al2O3, thereby reducing the number density of composite inclusions. This study not only demonstrates that a Zr content of 0.092-0.11 wt% can refine inclusions and reduce their number density, but also clarifies the thermodynamic and atomic-scale formation mechanisms of composite inclusions, providing theoretical guidance for inclusion control and process optimization in K4169 alloy.