单晶高温合金晶界缺陷研究进展  

Research Progress on Grain Boundary Defects of Single Crystal Superalloy

作　　者：王强 何歆 黄子琳 冯建文 张弓 石瑶 曾佳敏 袁珂 WANG Qiang;HE Xin;HUANG Zi-lin;FENG Jian-wen;ZHANG Gong;SHI Yao;ZENG Jia-min;YUAN Ke(AECC Hunan Aviation Power Plant Research Institute,Zhuzhou 412002,Hunan,China;Airworthiness Certification Center,CAAC,Beijing 100000,China)

机构地区：[1]中国航发湖南动力机械研究所,湖南株洲412002 [2]中国民用航空适航审定中心,北京100000

出　　处：《铸造》2024年第12期1647-1651,共5页Foundry

摘　　要：晶界是一种单晶高温合金中须严格控制的缺陷,但随单晶叶片结构的日益复杂,单晶晶体生长愈加的困难,完美单晶晶体获得的难度越来越大,晶界缺陷产生的可能性越来越高,因此开展单晶高温合金中晶界缺陷的研究已成为目前单晶研究工作的一个热点。本研究分析了单晶高温合金晶界缺陷产生的原因和控制难点,总结了现有小角度晶界对合金性能影响的研究,以及目前微量元素添加对提高合金晶界损伤容限的研究进展,并对今后的研究方向提出了展望。With the increasing complexity of the turbine blade structure,the grain boundary defect becomes more and more difficult to control.Therefore,the study of grain boundary defects in single crystal superalloys has become a hot spot in the research of single crystal.In this paper,the causes of the grain boundary defects of single crystal superalloys are studied,and the influence of small angle grain boundary on the properties of alloys is summarized.Research progress on increasing the damage tolerance of alloy by adding trace elements are summarized,the future research direction is also proposed.

关 键 词：单晶高温合金 小角度晶界 微量元素 性能 

分 类 号：TG132.32[一般工业技术—材料科学与工程]