Fachbereich 11 - Physik
Institut für Materialphysik
Strengthening and Nanostructure of Metals and Alloys

Determination of the specific antiphase boundary energy of the
L12-ordered g'-phases which strengthen the commercial superalloys
NIMONIC PE16 and NIMONIC 105

Single phase single crystals of the g'-phases which strengthen these superalloys have been slightly deformed. Afterwards thin foils have been prepared and studied by transmission electron microscopy. Form the spacing of superpartials the antiphase boundary energy is derived.The results are compared with those obtained by other experimental methods.

Drittmittelgeber:

Deutsche Forschungsgemeinschaft

Beteiligte Wissenschaftler:

Dr. D. Baither, Prof. Dr. H. P. Karnthaler (Institut für Materialphysik, Universität Wien), Prof. a. D. Dr. E. Nembach (Leiter), Dr. Chr. Rentenberger (Institut für Materialphysik, Universität Wien)

Veröffentlichungen:

Baither, D., C. Rentenberger, H. P. Karnthaler, E. Nembach: Three alternative experimental methods to determine the antiphase-boundary energies of the g'-precipitates in superalloys, Phil. Mag. A, 82, 1795, 2002