Charpy impact tests of tungsten fiber–reinforced composite from -150 °C to 1000 °C

Journal Article · 21 December 2021 · Materials Letters

DOI: https://doi.org/10.1016/j.matlet.2021.131526 · OSTI ID:1837852

Gietl, Hanns  ^[1]; Riesch, Johann  ^[2]; Höschen, Till ^[2]; Rieth, Michael  ^[3]; Coenen, Jan W.  ^[4]; Neu, Rudolf ^[5]

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1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
2. Max-Planck-Inst. für Plasmaphysik, Garching (Germany)
3. Karlsruhe Inst. of Technology, Eggenstein-Leopoldshafen (Germany)
4. Forschungszentrum Jülich GmbH (Germany); Univ. of Wisconsin, Madison, WI (United States)
5. Max-Planck-Inst. für Plasmaphysik, Garching (Germany); Technische Univ. München, Garching (Germany)

Tungsten features a unique combination of properties that makes it a favorable plasma-facing material in fusion reactors. The main drawbacks of tungsten are its brittleness at room temperature and the potential embrittlement during operation. Tungsten fiber–reinforced composites have the potential to overcome these limitations. Charpy impact tests ranging from -150 °C to 1000 °C have been performed. To identify the ductile-to-brittle transition temperature and understand the behavior at high temperature a detailed microscopic investigation was used to identify the transition temperature of fiber and matrix, which was between -100 °C to -50 °C and 1000 °C, respectively.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC05-00OR22725
• OSTI ID: 1837852
• Journal Information: Materials Letters, Journal Name: Materials Letters Journal Issue: 311 Vol. 311; ISSN 0167-577X
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English