| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6742804 | Fusion Engineering and Design | 2018 | 8 Pages |
Abstract
Tungsten/steel composites might play an important role in plasma-facing components, especially in joining of tungsten armor to structural parts made of steel. In this work, Young's moduli and shear moduli of a set of tungsten/P91 steel composites fabricated by spark plasma sintering were determined by resonant ultrasound spectroscopy. It was observed that the sintering temperature and the volume fractions of the individual phases have strong effects on the macroscopic elastic constants. The results were interpreted by means of a finite elements numerical model, showing that the regions of imperfectly bonded tungsten particles appearing in the microstructure of some of the composites act effectively as inclusions with very low elastic stiffness. A good correlation between the number of these regions in the microstructure and the elastic constants was observed.
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Authors
Martin Koller, Alena Kruisová, Radek MuÅ¡álek, JiÅà MatÄjÃÄek, HanuÅ¡ Seiner, Michal Landa,