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Numerical exploration into the potential of tungsten reinforced CuCrZr matrix composites

: Hohe, J.; Fliegener, S.; Findeisen, C.; Reiser, J.; Widak, V.; Rieth, M.

Postprint urn:nbn:de:0011-n-4044212 (5.5 MByte PDF)
MD5 Fingerprint: cc02dccdcbb440db227e06c3bf2c761f
Erstellt am: 08.12.2017

Journal of nuclear materials 470 (2016), S.13-29
ISSN: 0022-3115
European Commission EC
H2020; 633053; EUROfusion
Implementation of activities described in the Roadmap to Fusion during Horizon 2020 through a Joint programme of the members of the EUROfusion consortium
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IWM ()
nuclear fusion; high temperature material; metal matrix composites; tungsten; CuCrZr alloy; Design of Materials

The present study provides a numerical investigation into the potential of tungsten reinforced CuCrZr materials in order to overcome their limited performance at higher temperatures. Metal matrix composites including (i) particle reinforced microstructures, (ii) short fiber reinforced microstructures with both randomly orientated and (iii) aligned fibers as well as (iv) laminates consisting of stacked tungsten and CuCrZr layers are considered. The numerical analysis is performed by means of an energy based homogenization procedure in conjunction with a finite element analysis of representative volume elements for the respective microstructures. The results of the screening analysis reveal a distinct improvement of the mechanical properties of CuCrZr materials by the tungsten reinforcements even for moderate tungsten volume fractions. In a comparison of the different microstructures, the ordered microstructures, i.e. laminates and the aligned short fiber reinforced composites in most cases outperform their disordered counterparts.