Determination of the specific antiphase boundary energy of L1₂-ordered precipitates by the minimum dislocation loop size method

Peak-aged single crystals of a d'strengthened Al-Li-alloy and of the g'-strengthened superalloy NIMONIC PE16 have been compression tested. From the radius of the smallest dislocation loops sustained by d'- and g'-particles, the specific antiphase boundary energy is calculated. The evaluation is based on new computer simulations of the equilibrium configuration of dislocation loops (see B2).

Beteiligte Wissenschaftler:

Dr. D. Baither, Dr. V. Mohles, Prof. Dr. E. Nembach

Veröffentlichungen:

Baither, D., V. Mohles, E. Nembach: Derivation of the antiphase boundary energy of L1₂ long-range ordered precipitates from measurements of the minimum size of stable dislocation loops, to be submitted to Phil. Mag. Letters