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@ARTICLE{Chowdhury:840454,
author = {Chowdhury, Helal and Naumenko, Konstantin and Altenbach,
Holm and Krüger, Manja},
title = {{C}ritical {S}tresses {E}stimation by {C}rystal
{V}iscoplasticity {M}odeling of {R}ate-{D}ependent
{A}nisotropy of {A}l-rich {T}i{A}l {A}lloys at {H}igh
{T}emperature},
journal = {Archive of applied mechanics},
volume = {88},
number = {1-2},
issn = {1432-0681},
address = {Berlin},
publisher = {Springer},
reportid = {FZJ-2017-07970},
pages = {65-81},
year = {2018},
abstract = {Determining critical stresses for different slip systems is
one of the most important parts in crystal plasticity
modeling of anisotropy. However, the task of finding
individual critical resolved shear stress (CRSS) for every
single slip system, if not impossible, is formidable and a
delicate one especially if the microstructure is very
complex. Slip family-based, mechanism-based and
morphology-based (e.g., phase interface) slip systems
classification and hence determining CRSS consistent with
experimental measurements are often used in crystal
plasticity. In this work, a novel approach to determining
CRSS at high homologous temperature has been proposed by
crystal plasticity modeling of rate-dependent anisotropy.
Two-internal-variable-based phenomenological crystal
viscoplasticity model is adopted for simulating isothermal,
two-phase, single-crystal-like Al-rich lamellar
$Ti–61.8at.\%Al$ binary alloy at high-temperature
compression state (1050∘C) by employing finite strain and
finite rotation framework. To the best of authors’
knowledge, this is the first micromechanical modeling
attempt with long-period superstructures. Conventional
approaches related to CRSS estimation are also compared with
the proposed one. Our material parameters are based on
calibrating three different sets of compressive stain
rate-controlled plasticity data taken from the loading of
two different lamellar directions. It is revealed that the
proposed approach works fine for rate-dependent anisotropy
modeling, while other conventional approaches highly under-
or overestimate available anisotropic experimental behavior
of this alloy.},
cin = {IEK-2},
ddc = {690},
cid = {I:(DE-Juel1)IEK-2-20101013},
pnm = {111 - Efficient and Flexible Power Plants (POF3-111)},
pid = {G:(DE-HGF)POF3-111},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000424876300006},
doi = {10.1007/s00419-017-1291-4},
url = {https://juser.fz-juelich.de/record/840454},
}