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@ARTICLE{Tandogan:1034975,
author = {Tandogan, Tarik and Budnitzki, Michael and Sandfeld,
Stefan},
title = {{A} multi-physics model for the evolution of grain
microstructure},
journal = {International journal of plasticity},
volume = {185},
issn = {0749-6419},
address = {Frankfurt, M. [u.a.]},
publisher = {Pergamon Press},
reportid = {FZJ-2025-00081},
pages = {104201 -},
year = {2025},
abstract = {When a metal is loaded mechanically at elevated
temperatures, its grain microstructure evolves due to
multiple physical mechanisms. Two of which are the
curvature-driven migration of the grain boundaries due to
increased mobility, and the formation of subgrains due to
severe plastic deformation. Similar phenomena are observed
during heat treatment subsequent to severe plastic
deformation. Grain boundary migration and plastic
deformation simultaneously change the lattice orientation at
any given material point, which is challenging to simulate
consistently. The majority of existing simulation approaches
tackle this problem by applying separate, specialized models
for mechanical deformation and grain boundary migration
sequentially. Significant progress was made recognizing that
the Cosserat continuum represents an ideal framework for the
coupling between different mechanisms causing lattice
reorientation, since rotations are native degrees of freedom
in this setting.In this work we propose and implement a
multi-physics model, which couples Cosserat crystal
plasticity to Henry–Mellenthin–Plapp (HMP) type
orientation phase-field in a single thermodynamically
consistent framework for microstructure evolution. Compared
to models based on the Kobayashi–Warren–Carter (KWC)
phase-field, the HMP formulation removes the nonphysical
term linear in the gradient of orientation from the free
energy density, thus eliminating long-range interactions
between grain boundaries. Further, HMP orientation phase
field can handle inclination-dependent grain boundary
energies. We evaluate the model’s predictions and
numerical performance within a two-dimensional finite
element framework, and compare it to a previously published
results based on KWC phase-field coupled with Cosserat
mechanics.},
cin = {IAS-9},
ddc = {530},
cid = {I:(DE-Juel1)IAS-9-20201008},
pnm = {5111 - Domain-Specific Simulation $\&$ Data Life Cycle Labs
(SDLs) and Research Groups (POF4-511)},
pid = {G:(DE-HGF)POF4-5111},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001402762100001},
doi = {10.1016/j.ijplas.2024.104201},
url = {https://juser.fz-juelich.de/record/1034975},
}