Elastic parameters of various rafted structures of model Ni-base alloys

0352176 - ÚFM 2011 RIV CH eng J - Journal Article
Buršík, Jiří
Elastic parameters of various rafted structures of model Ni-base alloys.
Key Engineering Materials. Roč. 465, - (2011), s. 85-88. ISSN 1013-9826
Institutional research plan: CEZ:AV0Z20410507
Keywords : rafting * elasticity * Ni-base superalloys
Subject RIV: BM - Solid Matter Physics ; Magnetism

Two-phase microstructure of orderer cube-shaped precipitates in the disorderer matrix is characteristic of Ni-base superalloys. This microstructure degrades under the applied stress:depending on the stress direction, latice misfit and elastic parameters of both constituent phases, the precipitates coalesce and change their overall shape. Various atomic configurations were modeled in this work representing various morphologies of precipitates developed under applied stress. A model Ni-base alloy containing six alloing elements typical of advanced Ni-besed superalloys was used. Generated configurations were further subject to study of elastic parameters by means of computer straining experiments.
Permanent Link: http://hdl.handle.net/11104/0191751