铸造2025，Vol.74Issue(7)：895-904,10.
籽晶法制备单晶高温合金杂晶缺陷控制技术研究进展
Research Progress of Stray Grain Defect Control Technology on Single Crystal Superalloys Prepared by Seeding Method
摘要
Abstract
The proposed seeding method for preparing single crystal superalloys solves the key problem of orientation deviation during the crystal directional growth process in single crystal alloys.By using the seed orientation,it enables accurate control of crystal orientation for the desired parts,which has attracted the attention of numerous scholars,and extensive researches have been conducted on the formation mechanisms and controls of stray grain defects,as well as the preparation process optimization,etc.for the single crystal superalloys prepared using the seeding method.Based on the current research situations at home and abroad,this paper summarizes the research progresses in numerical simulation and experiments of seeding method for preparing single crystal superalloys in recent years.Based on the directional solidification characteristics,the mechanisms of stray grain defect formations during seed epitaxial growth processes have been reviewed.At the same time,the defect control technologies are achieved from the aspects of material properties and solidification processes,and so on.Finally,it offers insights into the future development trends of the seeding method for preparing single crystal superalloys.关键词
籽晶制备技术/单晶高温合金/杂晶缺陷/凝固工艺/数值模拟Key words
seeding method/single crystal superalloys/stray grain defects/solidification process/numerical simulation分类
矿业与冶金引用本文复制引用
高雪峰,王亮,白炜琛,林子博,赵遇成,张朝威,杨彦红,孟杰,周亦胄..籽晶法制备单晶高温合金杂晶缺陷控制技术研究进展[J].铸造,2025,74(7):895-904,10.基金项目
国家资助博士后研究人员计划项目(GZC20232739) （GZC20232739）
国家重点研发计划(2019YFA0705300) （2019YFA0705300）
国家科技重大专项(Y2019-Ⅶ-0011-0151). （Y2019-Ⅶ-0011-0151）
