Precipitation behavior of μ phase and creep rupture in single crystal superalloy CMSX-4

Precipitation behavior of a topologically close packed (TCP) μ phase as well as its role during the creep deformation in single crystal superalloy CMSX-4 have been investigated. The μ particles nucleated and grew based on low index planes of both the μ phase ({112¯0} and {101¯0}) and the matrix ({1 1 0}, {0 0 1} or {1 1 1} and {1 1 2}) by epitaxial growth toward 〈0 0 0 1〉μ or 〈1 1 0〉γ directions, which predominantly resulted in a rod-like...