The decrease of the strength of superalloys at high temperatures

The critical resolved shear stress t_t of nickel-base superalloys is virtually independent of temperature up to the temperature T_max. For NIMONIC PE16 T_max is close to 1050K. Above T_max t_t decreases precipitously. The aim of this investigation is to identify the processes which govern this decrease. One possibility is that the strengthening g'-precipitates dissolve above 1050K. The following experiments have or will be conducted: sli

Drittmittelgeber:

Deutsche Forschungsgemeinschaft

Beteiligte Wissenschaftler:

Dipl.-Phys. E. Langmaack, Prof. Dr. E. Nembach, Dipl.-Phys. A. Vennemann

Veröffentlichungen:

Vennemann, A., E. Langmaack, E. Nembach: On the temperature dependence of the critical resolved shear stress of the superalloy NIMONIC PE16, Scripta mater., submitted