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@ARTICLE{Xia:875301,
author = {Xia, Wenzhen and Dehm, Gerhard and Brinckmann, Steffen},
title = {{I}nsight into indentation-induced plastic flow in
austenitic stainless steel},
journal = {Journal of materials science},
volume = {55},
number = {21},
issn = {1573-4803},
address = {Dordrecht [u.a.]},
publisher = {Springer Science + Business Media B.V},
reportid = {FZJ-2020-01932},
pages = {9095 - 9108},
year = {2020},
abstract = {The indentation-induced plasticity and roughness have been
investigated intensively by experiments and simulations
during the last decades. However, the precise mechanisms of
how dislocation flow leads to pile-up formation are still
not completely understood, although this is one of the
initial steps causing surface roughening in tribological
contacts at low loads. In this work, {001}-, {101}- and
{111}-grain orientations in an austenite stainless steel
[(face-centered cubic (FCC) phase]) are indented with
varying load forces. By using scanning electron-based
methods and slip plane analysis, we reveal: (1) how
slip-steps show the change of pile-up formation, (2) how the
slip-plane inclination determines the dislocation flow and
(3) how slip-plane interactions result in the final pile-up
shape during indentation. We find that the flow direction
transforms from the forward flow to the sideway at a
transition angle of 55∘−58∘ between the slip-plane and
the surface. We use large displacement finite element method
simulations to validate an inversion of the resolved shear
stress at this transition angle. We provide insights into
the evolution of plasticity in dislocation-mediated FCC
metal indentations, with the potential application of this
information for indentation simulations and for
understanding the initial stage of scratching during
tribology in the future.},
cin = {IEK-2},
ddc = {670},
cid = {I:(DE-Juel1)IEK-2-20101013},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113) / 1241 - Gas turbines (POF4-124)},
pid = {G:(DE-HGF)POF3-113 / G:(DE-HGF)POF4-1241},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000526213900001},
doi = {10.1007/s10853-020-04646-y},
url = {https://juser.fz-juelich.de/record/875301},
}