Modeling of formation of precipitate free zone

0352179 - ÚFM 2011 RIV DE eng J - Článek v odborném periodiku
Svoboda, Jiří - Maier, G.
Modeling of formation of precipitate free zone.
International Journal of Materials Research. Roč. 101, č. 8 (2010), s. 997-1002. ISSN 1862-5282. E-ISSN 2195-8556
Grant CEP: GA ČR GAP108/10/1781
Výzkumný záměr: CEZ:AV0Z20410507
Klíčová slova: Precipitate free zone * Diffusion * Coarsening
Kód oboru RIV: BJ - Termodynamika
Impakt faktor: 0.860, rok: 2010

Formation of precipitate free zones due to growth of intergranular precipitates on the account of intragranular precipitates in the nearest vicinity of the grain boundary represents a significant degradation of the material. The loss of strength of the material in the precipitate free zone allows propagation of cracks in the zones and causes an embrittlement of the material. Based on application of the thermodynamic extremal principle a robust model is derived, which allows the description of the kinetics of formation of the precipitate free zone. Several simulations based on the model are performed and the results are discussed.
Trvalý link: http://hdl.handle.net/11104/0191754