[Zurück]

P. Sherstnev, P. Lang, E. Kozeschnik:
"Treatment of simultaneous deformation and solid-state precipitation in thermo-kinetic calculations";
Vortrag: 6th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2012), University of Vienna; 10.09.2012 - 14.09.2012; in: "CD-ROM Proceedings of the 6th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2012), September 10-14, 2012, Vienna, Austria", (2012), 8 S.

The kinetics of solid-state precipitation depends very much on microstructure parameters such as dislocation density, subgrain size as well as excess vacancy density. Because deformation processes directly and indirectly affect all of these microstructure
parameters, the implementation into thermo-kinetic calculations is an essential step towards a physical understanding and description of precipitation kinetics during metal processing. The present work is focused on the development of suitable evolution equations for both dislocation formation and annihilation as well as generation and annihilation of deformation-induced vacancies at different types of sinks represented by jogs at dislocations, by grain boundaries or free surfaces. Application of the model was demonstrated on the
example of different Al-alloys using the thermo-kinetic software MatCalc.

thermo kinetics, solid-state precipitation, deformation