Multi-scale modeling of microstructure evolution induced anisotropy in metals

This paper presents two crystal plasticity based computational constitutive models for the intrinsic evolution of plastic microstructure formation during monotonic loading and its altered evolution under strain path changes in metal forming operations. The formation step is modeled via a nonconvex strain gradient crystal plasticity framework which could simulate the intrinsic evolution of plastic microstructure evolution. The evolution under strain path changes is modeled via phenomenologically based constitutive equations incorporated into crystal plasticity framework. The latter step simulates the transient anisotropy effect (e.g. cross hardening, Bauschinger effect) depending on the change in the strain path. The paper discusses the unification of such models for the continuous modleing of microstructure formation and evolution processes.

YALCINKAYA Tuncay; 

2013-09-03

TRANS TECH PUBLICATIONS LTD

JRC80167

1013-9826,   

http://www.scientific.net/KEM.554-557.2388,    https://publications.jrc.ec.europa.eu/repository/handle/JRC80167,   

10.4028/www.scientific.net/KEM.554-557.2388,