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@ARTICLE{Dhekne:637229,
author = {Dhekne, Pushkar and Prabhu, Nikhil and Bönisch, Matthias
and Seefeldt, Marc and Diehl, Martin and Vanmeensel, Kim},
title = {{D}eformation mechanisms of {L}-{PBF}-processed
{T}i-6{A}l-4{V} investigated using a combined experimental
and simulation approach},
reportid = {PUBDB-2025-03821, arXiv:2508.16367},
year = {2025},
note = {cited as arXiv:2508.16367 [cond-mat.mtrl-sci]},
abstract = {Despite the significant application potential of laser
powder bed fusion (L-PBF) processed Ti-6Al-4V components, a
detailed understanding of their deformation mechanisms
remains limited. This study investigates the deformation
behavior of the ${α^\prime}$ and α phases in the as-built
and heat-treated specimens, respectively, using in-situ
high-energy X-ray diffraction (HEXRD) combined with crystal
plasticity modeling. Both phases exhibited similar elastic
anisotropy, with the highest modulus along $\{00.2\}$ and
the lowest along $\{10.0\},$ although the α phase
consistently showed higher directional moduli than the
${α^\prime}$ phase. Their plastic deformation responses
differed markedly: in the as-built ${α^\prime}$ phase, slip
activation followed the sequence prismatic $\rightarrow$
basal $\rightarrow$ pyramidal I $\langle$ c+a $\rangle,$
whereas in the heat-treated α phase, the sequence was basal
$\rightarrow$ prismatic $\rightarrow$ pyramidal I $\langle$
c+a $\rangle.$ Analyses of full width at half maximum (FWHM)
and diffraction peak intensities further supported these
observations. Finally, inverse modeling within a crystal
plasticity framework was employed to determine slip
family--specific critical resolved shear stresses (CRSS),
revealing higher CRSS values in the ${α^\prime}$ phase for
all slip systems except the prismatic family.},
keywords = {Materials Science (cond-mat.mtrl-sci) (Other) / FOS:
Physical sciences (Other)},
cin = {DOOR ; HAS-User / Hereon},
cid = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)Hereon-20210428},
pnm = {6G3 - PETRA III (DESY) (POF4-6G3) / FS-Proposal: I-20190769
EC (I-20190769-EC) / CALIPSOplus - Convenient Access to
Light Sources Open to Innovation, Science and to the World
(730872)},
pid = {G:(DE-HGF)POF4-6G3 / G:(DE-H253)I-20190769-EC /
G:(EU-Grant)730872},
experiment = {EXP:(DE-H253)P-P07-20150101},
typ = {PUB:(DE-HGF)25},
eprint = {2508.16367},
howpublished = {arXiv:2508.16367},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2508.16367;\%\%$},
doi = {10.3204/PUBDB-2025-03821},
url = {https://bib-pubdb1.desy.de/record/637229},
}