Mechanical properties and microstructure of W/CuY and W/CuCrZr composites produced by hot isostatic pressing Articles uri icon

publication date

  • March 2019

start page

  • 1829

end page

  • 1833

volume

  • 146 B

International Standard Serial Number (ISSN)

  • 0920-3796

Electronic International Standard Serial Number (EISSN)

  • 1873-7196

abstract

  • 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 500 °C was characterized by electron backscatter diffraction (EBSD) measurements and nanoindentation. The correlation between the plastic deformation, grain size and misorientation distributions, has been revealed.

keywords

  • composite; copper; ebsd; plastic deformation; tungsten; yttrium