文献类型：期刊文献

英文题名：Effect of Al and Ti addition on the characteristics of oxide inclusions in Ni-based superalloy

作者：Wang, Linzhu Zhang, Yin Chen, Chaoyi Li, Xiang Li, Junqi Yang, Shufeng

第一作者：Wang, Linzhu

通信作者：Chen, CY[1]

机构：[1]Guizhou Univ, Sch Mat & Met, Guiyang 550025, Guizhou, Peoples R China;[2]Guizhou Inst Technol, Dept Mat & Met Engn, Guiyang 550003, Guizhou, Peoples R China;[3]Univ Sci & Technol, Sch Met & Ecol Engn, Beijing 100083, Peoples R China

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

通信机构：corresponding author), Guizhou Univ, Sch Mat & Met, Guiyang 550025, Guizhou, Peoples R China.

年份：2023

卷号：120

期号：2

外文期刊名：METALLURGICAL RESEARCH & TECHNOLOGY

收录：;EI(收录号：20232014085279);Scopus(收录号：2-s2.0-85159017749);WOS:【SCI-EXPANDED(收录号:WOS:000972047200001)】；

基金：This project is supported by the National Science Foundation of China with grant No. 51864013, 51804086, 52064011, 52074095

语种：英文

外文关键词：Ni-based alloy; inclusion; characteristic; coarsening; collision

摘要：The characteristics of inclusions have a significant influence on the performance and fatigue life of Ni-based alloy and some cracks usually initiate and propagate from inclusions. High-temperature experiments were carried out at 1823 K to study the effect of Al and Ti addition on the characteristics of oxide inclusions in Ni-based alloy. The size, number, distance, distribution of oxide inclusions and degree of homogeneity in inclusion dispersion in Ni-based alloy with [%Al](i) = 0.3-0.7 and [%Ti](i) = 0.7-1.2 (i represent initial addition of deoxidant) were analyzed systematically. It is found that the oxide inclusions in alloys with [%Al](i) = 0.7, [%Ti](i) = 0.7/1.2 had smaller average size of 2.4 mu m and distributed more homogeneously. The Ostwald ripening theory and collision model were applied to point out the relationships among compositions of Ni-based alloy, behaviors of oxide inclusions and their characteristics under the condition of no external stirring. The calculated results were in good agreement with experimental results. The mechanism on obtaining fine and dispersed oxide inclusions in Ni-based alloy was summarized.