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@ARTICLE{Khl:14094,
author = {Köhl, M. and Bram, M. and Moser, A. and Buchkremer, H.P.
and Beck, T. and Stöver, D.},
title = {{C}haracterization of porous, net-shaped {N}i{T}i alloy
regarding its damping and energy-absorbing capacity},
journal = {Materials science and engineering / A},
volume = {528},
issn = {0921-5093},
address = {Amsterdam},
publisher = {Elsevier},
reportid = {PreJuSER-14094},
pages = {2454 - 2462},
year = {2011},
note = {This work was funded by the Deutsche Forschungsgemeinschaft
(DFG) as part of SFB459 and is part of Manuel Kohl's PhD
thesis. Furthermore, the authors wish to thank Dr. Russell
Goodall (EPFL, Lausanne) for producing and providing the
spherical salt particles.},
abstract = {Porous NiTi alloys are highly attractive for energy
absorbers, damping devices and biomedical implants. In the
present work, metal injection moulding (MIM) in combination
with the application of a suitable space holder material was
used for the production of NiTi parts with well defined pore
sizes and porosities in the range of 30-70 $vol.\%.$ For
comparing the properties, porous titanium and Ti-6Al-4V
samples were prepared in the same manner.Focus of the
present work was a detailed investigation of the mechanical
properties of porous NiTi to estimate its potential
regarding the abovementioned applications. For a Ni-rich
NiTi alloy with a porosity of 50 $vol.\%,$ fully pronounced
pseudoelasticity after $6\%$ compression was demonstrated.
An energy dissipation of 1.5 MJ/m(3) was measured, which
could be directly related to the reversible
austenite-martensite phase transformation. At higher
deformations, pseudoelasticity becomes more and more
superposed by the onset of plastic deformation.
Nevertheless, even at deformations of up to $50\%,$ a
clearly pronounced amount of pseudoelastic shape recovery
still remained. Fatigue of pseudoelasticity was investigated
by conducting of up to 230,000 load cycles to $4\%$
compression at a frequency of 1 Hz. (C) 2010 Elsevier B.V.
All rights reserved.},
keywords = {J (WoSType)},
cin = {IEK-1},
ddc = {600},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {Rationelle Energieumwandlung},
pid = {G:(DE-Juel1)FUEK402},
shelfmark = {Nanoscience $\&$ Nanotechnology / Materials Science,
Multidisciplinary},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000287643200036},
doi = {10.1016/j.msea.2010.11.055},
url = {https://juser.fz-juelich.de/record/14094},
}