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@ARTICLE{Riesch:872839,
author = {Riesch, J. and Feichtmayer, A. and Fuhr, M. and
Almanstötter, J. and Coenen, J. W. and Gietl, H. and
Höschen, T. and Linsmeier, Ch and Neu, R.},
title = {{T}ensile behaviour of drawn tungsten wire used in tungsten
fibre-reinforced tungsten composites},
journal = {Physica scripta},
volume = {T170},
issn = {1402-4896},
address = {Stockholm},
publisher = {The Royal Swedish Academy of Sciences},
reportid = {FZJ-2020-00309},
pages = {014032 -},
year = {2017},
abstract = {In tungsten fibre-reinforced tungsten composites (Wf/W) the
brittleness problem of tungsten is solved by utilizing
extrinsic toughening mechanisms. The properties of the
composite are very much related to the properties of the
drawn tungsten wire used as fibre reinforcements. Its high
strength and capability of ductile deformation are ideal
properties facilitating toughening of Wf/W. Tensile tests
have been used for determining mechanical properties and
study the deformation and the fracture behaviour of the
wire. Tests of as-fabricated and straightened drawn wires
with a diameter between 16 and 150 μm as well as wire
electrochemically thinned to a diameter of 5 μm have been
performed. Engineering stress–strain curves and a
microscopic analysis are presented with the focus on the
ultimate strength. All fibres show a comparable
stress–strain behaviour comprising necking followed by a
ductile fracture. A reduction of the diameter by drawing
leads to an increase of strength up to 4500 MPa as a
consequence of a grain boundary hardening mechanism. Heat
treatment during straightening decreases the strength
whereas electrochemical thinning has no significant impact
on the mechanical behaviour.},
cin = {IEK-4},
ddc = {530},
cid = {I:(DE-Juel1)IEK-4-20101013},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000414120500032},
doi = {10.1088/1402-4896/aa891d},
url = {https://juser.fz-juelich.de/record/872839},
}