Microstructural Evolution of the [001] Oriented Single Crystal Superalloy DD6 Creep at 760°C and 785 MPa

Abstract:

The creep and microstructures of DD6 single crystal superalloy with [001] 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.

• Periodical: Advanced Materials Research (Volumes 535-537)
• Pages: 888-893
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.535-537.888
• Online since: June 2012
• Authors: Jian Yu, Jia Rong Li, Zhen Xue Shi, Jin Qian Zhao, Shi Zhong Liu, Mei Han
• Keywords: Creep, DD6, Single Crystal Superalloy, Stacking Fault

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