Microstructural Evolution of the  Oriented Single Crystal Superalloy DD6 Creep at 760°C and 785 MPa
The creep and microstructures of DD6 single crystal superalloy with  orientation at 760°C and 785MPa were investigated. The results show that large a/2 dislocations are spread and concentrated in matrix channels during incubation period, and few of stacking faults are observed at later stage of incubation period. The stage of primary creep is characterized by the stacking faults shearing γ' phases, and the density of a/2 dislocations in the matrix continues to increase. The density of the stacking faults increases during the stages of secondary and tertiary creep.
Chunxiang Cui, Yali Li and Zhihao Yuan
J. Yu et al., "Microstructural Evolution of the  Oriented Single Crystal Superalloy DD6 Creep at 760°C and 785 MPa", Advanced Materials Research, Vols. 535-537, pp. 888-893, 2012