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@ARTICLE{Terentyev:837024,
author = {Terentyev, D. and Riesch, J. and Lebediev, S. and Bakaeva,
A. and Coenen, J. W.},
title = {{M}echanical properties of as-fabricated and 2300 °{C}
annealed tungsten wire tested up to 600 °{C}},
journal = {International journal of refractory metals $\&$ hard
materials},
volume = {66},
issn = {0263-4368},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2017-06040},
pages = {127 - 134},
year = {2017},
abstract = {Recent efforts dedicated to the mitigation of tungsten
brittleness have demonstrated that tungsten fiber-reinforced
composites acquire pseudo ductility even at room
temperature. Crack extension and fracture process is
basically defined by the strength of tungsten fibers. Here,
we move forward and report the results of mechanical and
microstructural investigation of different grades of W wire
with a diameter of 150 μm at elevated temperature up to 600
°C. The results demonstrated that potassium doping to the
wire in the as-fabricated state does not principally change
the mechanical response, and the fracture occurs by grain
elongation and delamination. Both fracture stress and
fracture strain decrease with increasing test temperature.
Contrary to the as-fabricated wire, the potassium-doped wire
annealed at 2300 °C exhibits much lower fracture stress.
The fracture mechanism also differs, namely: cleavage below
300 °C and ductile necking above. The change in the
fracture mechanism is accompanied with a significant
increase of the elongation to fracture being ~ $5\%$ around
300 °C.},
cin = {IEK-4},
ddc = {670},
cid = {I:(DE-Juel1)IEK-4-20101013},
pnm = {174 - Plasma-Wall-Interaction (POF3-174)},
pid = {G:(DE-HGF)POF3-174},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000418222000019},
doi = {10.1016/j.ijrmhm.2017.03.011},
url = {https://juser.fz-juelich.de/record/837024},
}