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Originalveröffentlichung
DOI: 10.1016/j.ijrmhm.2017.07.013

Ductilisation of tungsten (W): Tungsten laminated composites

Reiser, J.; Garrison, L.; Greuner, H.; Hoffmann, J.; Weingärtner, T.; Jäntsch, U.; Klimenkov, M.; Franke, P.; Bonk, S.; Bonnekoh, C.; Sickinger, S.; Baumgärtner, S.; Bolich, D.; Hoffmann, M.; Ziegler, R.; Konrad, J.; Hohe, J.; Hoffmann, A.; Mrotzek, T.; Seiss, M.; ... mehr

Abstract:
Here we elucidate the mechanisms of plastic deformation and fracture of tungsten laminated composites. Our results suggest that the mechanical response of the laminates is governed by the plastic deformation of the tungsten plies. In most cases, the impact of the interlayer is of secondary importance.

Severely cold-rolled ultrafine-grained tungsten foils possess exceptional properties in terms of brittle-to-ductile transition (BDT), toughness, and tensile ductility. The motivation for investigating laminated composites is to determine whether a bulk material can be made that retains the ductility of the thin tungsten foils.

In this paper we analyse W-AgCu, W-Cu, W-V, and W-Pd laminates in their as-produced and annealed conditions (e.g. 10, 100 and 1000 h at 1000 °C (1273 K) in vacuum). The analyses comprise (i) the mechanical characterisation by means of three-point bending (damage tolerance), Charpy impact (BDT), and tensile tests (total elongation to fracture) as well as (ii) the in-depth analyses of the microstructure by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Auger electron ... mehr


Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator ISSN: 0263-4368, 0958-0611
KITopen ID: 1000073445
HGF-Programm 31.03.07; LK 01
Erschienen in International journal of refractory metals & hard materials
Band 69
Seiten 66-109
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