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On the thermal Cyclic Loading Behaviour of a directional eutectic superalloy based on the CoCrC system
Author(s) -
Hildebrandt U. W.,
Nicoll A. R.
Publication year - 1981
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.19810121105
Subject(s) - eutectic system , superalloy , materials science , carbide , creep , volume fraction , temperature cycling , refractory (planetary science) , directional solidification , metallurgy , thermal fatigue , composite material , thermal , microstructure , thermodynamics , physics
Various modifications of the eutectic, directionally solidified superalloy 73 C were investigated with respect to creep fatigue effects. This was carried out using a thermal cycling apparatus where a mechanical uniaxial load could be applied. A high volume fraction of carbides had an impairing effect on fatigue life. An improvement, however, could be obtained using low concentrations of refractory elements which form monocarbides.