Effect of Ru additions on very high temperature creep properties of a single crystal Ni-based superalloy

Creep deformation related to dislocations cutting the γ′ phase of a Ni-base single crystal superalloy

“…The relationship between the TCP phase precipitation and the microstructural stability has been investigated extensively [20][21][22]26]. In this experimental alloy, inevitable precipitation of TCP phase has also been observed.…”

“…3 and 6). the other hand, the solid solution strengthening elements, such as Re, W, and Ru, are depleted from the γ or γ 0 phase when the precipitation of TCP phase occurs within the system [20,26]. It is generally considered that the TCP phase is prone to precipitate at higher temperature and detrimental to the mechanical properties.…”

Creep behavior of Pt-aluminide (PtAl) coated directionally solidified Ni-based superalloy CM-247LC after thermal exposure

“…The transverse rafting of γ′ precipitates initiates right from the very beginning of primary stage of creep deformation and the rafts coarsen over the entire secondary creep deformation regime while the tertiary creep regime corresponds to the shearing of the rafted γ′ precipitates at regions of localized geometrical instability [29][30][31][32][33][34]40]. For enhanced creep properties, a prolonged primary as well as secondary stage of creep deformation and delayed tertiary creep is envisaged.…”

Influence of Ru on creep behaviour and concentration distribution of Re-containing Ni-based single crystal superalloy at high temperature

“…Microstructure of Ni-based single crystal alloys is composed of cubical γ' phase embedded coherent in γ matrix, and the alloys had been commonly applied in some critical fields due to the outstanding high temperature (HT) mechanical properties, for example, making the blade parts of the advanced aero-engines [1]. With the raise of the inlet temperature in the turbines of aero-engine, the temperature capacity of alloys is required to improve.…”