Naslov
Effect of structural characteristics of strengthening phase on creep/fatigue behavior of single crystal nickel base superalloys

Autori
Zrnik, J. ; Hazlinger, M. ; Mamuzić, Ilija ; Zitnansky, M.

Izvornik
Metalurgija (0543-5846) 34 (1995), 3; 61-66

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
austenite ; creep ; deformation ; fatigue of materials ; fracture ;

Sažetak
The effect of different initial microstructures defined by various precipitates γ morphology was investigated at the creep/fatigue conditions by 900 °C and 500 MPa. The waveform of stress as a function of time for cyclic loading was of trapezoidal shape with a hold time 10 seconds at the upper stress level. TEM was employed to examine the deformation process in a strengthened γ matrix in dependence of γ precipitate morphology. The fracture lifetime and cycles up to fracture were the criteria for the evaluate the additional cyclic component effect on of the course of deformation.

Izvorni jezik
Engleski

Znanstvena područja
Metalurgija

POVEZANOST RADA