%0 Journal Article
%T Precipitation Behavior of the Topologically Close-Packed Phase in the DD5 Superalloy during Long-Term Aging
%A Liu
%A Guiqun
%A Qiao
%A Yanxin
%A Wang
%A Xinyi
%A Zhang
%A Xiaoli
%J -
%D 2020
%R https://doi.org/10.1155/2020/2569837
%X The precipitation behaviors of the topologically close-packed (TCP) phases in the bicrystal DD5 superalloy have been investigated. The results showed that the [001] crystallographic orientations are consistent with that of adjacent grains; however, the direction of the needle-like TCP phases is not consistent with that of the phase channels. The angle between needle-like TCP phases and phase channels is 45กใ, but the angle between the needle-like TCP phases of the adjacent grains is equal to the misorientation of the adjacent grains. Furthermore, during long-term aging, the needle-like TCP phases gradually decompose and transform into globular and short rod-like phases. The TCP phases precipitate preferentially in the dendrite. It is difficult to precipitate at the interdendrite/grain boundary, which is caused by the segregation of the constituent elements of the TCP phase to the dendrite
%U https://www.hindawi.com/journals/scanning/2020/2569837/