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
Key words
single crystal superalloy/low angle boundary/trace element/property
维普
万方数据