Effect of Hot Isostatic Pressing on the Microstructure of Single Crystal Ni-based Superalloy DD10
The effects of hot isostatic pressing on the microstructures of a third generation single crystal Ni-based superalloy DD10 were investigated by using optical microscope (OM),scanning electron microscope (SEM),electron microprobe analyzer (EPMA).The results showed that the micropores in the interdendritic region were eliminated completely after hot isostatic pressing at 1320℃ and 150MPa.Meanwhile,the morphology of γprecipitates changed to be more cuboidal and the distribution of γprecipitates in both dendrite core and interdendritic region became more uniform after hot isostatic pressing.Hot isostatic pressing also promoted the homogenization of the composition between dendrite core and interdendritic region and the dendritic segregation of Re,W,Al and Ta was decreased.
DD10 Hot isostatic pressing Micropore γ precipitate Dendritic segregation
Lijun Liu Ming Xue Jingyang Chen Lamei Cao
Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095, China
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
772-776
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）