Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7983651 | Materials Science and Engineering: A | 2013 | 7 Pages |
Abstract
The effect of orientation on the creep properties of DD6 single crystal superalloy is investigated. The results show that anisotropic creep behaviors of DD6 alloy within 20° of the [001] direction are observed at 760 °C and 785 MPa. The [001] direction and the [001]-[011] boundary exhibit lower primary creep strain and longer creep rupture lives than the [001]-[111] boundary. In addition, the major creep deformation mechanism of DD6 single crystal superalloy at 760 °C and 785 MPa is aã112ã dislocation ribbon passing through both γ and γⲠphases. The interaction between ã112ã{111} systems is the principle hardening mechanism for the transition from primary creep to secondary creep, the interaction leads to the anisotropy of primary creep and creep rupture lives for the [001] direction, the [001]-[011] boundary and the [001]-[011] boundary.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
J. Yu, J.R. Li, J.Q. Zhao, M. Han, Z.X. Shi, S.Z. Liu, H.L. Yuan,