- FUSION ENGINEERING AND DESIGN Journal
- September 2019
- 146 B
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- Fully dense W-15 wt%CuY and W-15 wt%CuCrZr composites have been produced by a powder metallurgy route and hot isostatic pressing. The consolidated materials show homogeneous distributions of pre-alloyed CuY and CuCrZr embedded in W phase. Y-enriched particles were found inside the CuY phase. Their mechanical behavior was studied under uniaxial compression from room temperature to 500°C. W/CuY exhibited a higher value of the yield strength, but W/CuCrZr presented a larger compressive deformation. Both composites manifested strain hardening during plastic deformation. The deformed microstructure at 250°C and 500ºC was characterized by electron backscatter diffraction (EBSD) measurements and nanoindentation. The correlation between the plastic deformation, grain size and misorientation distributions, has been revealed.
- composite; copper; ebsd; plastic deformation; tungsten; yttrium