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@ARTICLE{Mao:842191,
author = {Mao, Yiran and Coenen, Jan Willem and Riesch, J. and
Sistla, S. and Almanstötter, J. and Jasper, Bruno and
Terra, Alexis and Höschen, T. and Gietl, H. and Bram,
Martin and Gonzales, Jesus and Linsmeier, Christian and
Broeckmann, C.},
title = {{D}evelopment and characterization of powder
metallurgically produced discontinuous tungsten fiber
reinforced tungsten composites},
journal = {Physica scripta},
volume = {2017},
issn = {0031-8949},
address = {Bristol},
publisher = {IoP Publ.},
reportid = {FZJ-2018-00459},
pages = {7 / 014005},
year = {2017},
abstract = {In future fusion reactors, tungsten is the prime candidate
material for the plasma facing components. Nevertheless,
tungsten is prone to develop cracks due to its intrinsic
brittleness—a major concern under the extreme conditions
of fusion environment. To overcome this drawback, tungsten
fiber reinforced tungsten (Wf/W) composites are being
developed. These composite materials rely on an extrinsic
toughing principle, similar to those in ceramic matrix
composite, using internal energy dissipation mechanisms,
such as crack bridging and fiber pull-out, during crack
propagation. This can help Wf/W to facilitate a
pseudo-ductile behavior and allows an elevated damage
resilience compared to pure W. For pseudo-ductility
mechanisms to occur, the interface between the fiber and
matrix is crucial. Recent developments in the area of
powder-metallurgical Wf/W are presented. Two consolidation
methods are compared. Field assisted sintering technology
and hot isostatic pressing are chosen to manufacture the
Wf/W composites. Initial mechanical tests and
microstructural analyses are performed on the Wf/W
composites with a $30\%$ fiber volume fraction. The samples
produced by both processes can give pseudo-ductile behavior
at room temperature.},
cin = {IEK-1 / IEK-4},
ddc = {530},
cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-4-20101013},
pnm = {174 - Plasma-Wall-Interaction (POF3-174) / HITEC -
Helmholtz Interdisciplinary Doctoral Training in Energy and
Climate Research (HITEC) (HITEC-20170406)},
pid = {G:(DE-HGF)POF3-174 / G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000414120500005},
doi = {10.1088/0031-8949/2017/T170/014005},
url = {https://juser.fz-juelich.de/record/842191},
}