Abstract
The current work investigates the mechanical properties of W–Ni–Fe tungsten heavy alloy (WHA) composites reinforced with 0.25, 0.5, 0.75 and 1.0 wt% of yttria-stabilized zirconia (YSZ). The composites were fabricated through spark plasma sintering (SPS) technique. Detailed microstructural characterization of the sintered samples, including contiguity, grain size and matrix volume fraction, was carried out. It was found that the W–W contiguity was decreasing with increasing amount of YSZ. Hardness and yield strength of the sintered samples were found to be decreasing with the increasing amount of YSZ. The WHA with 0.25 wt% YSZ exhibited the highest mechanical properties among all compositions chosen for this study. Fractography revealed W–W intergranular fracture indicating a brittle mode failure.
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Abbreviations
- WHA:
-
Tungsten heavy alloy
- YSZ:
-
Yttria-stabilized zirconia
- Y2O3 :
-
Yttrium oxide
- WC:
-
Tungsten carbide
- SiC:
-
Silicon carbide
- La2O3 :
-
Lanthanum oxide
- HfO2 :
-
Hafnium dioxide
- TiO2 :
-
Titanium dioxide
- ZrO2 :
-
Zirconium dioxide
- ZrC:
-
Zirconium carbide
- Sc2O3 :
-
Scandium oxide
- SPS:
-
Spark plasma sintering
- BN:
-
Boron nitride
- EDS:
-
Energy-dispersive X-ray spectroscopy
- UTS:
-
Ultimate tensile strength
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Acknowledgements
The authors wish to acknowledge the RGEMS SEED Grant from the Vellore Institute of Technology, Vellore, India, for the partial funding of this work. The use of facilities available at VIT Vellore provided by Department of Science and Technology—India is duly acknowledged for the successful completion of this research work.
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Muthuchamy, A., Boggupalli, L.P., Yadav, D.R. et al. Particulate-Reinforced Tungsten Heavy Alloy/Yttria-Stabilized Zirconia Composites Sintered Through Spark Plasma Sintering. Arab J Sci Eng 45, 9283–9291 (2020). https://doi.org/10.1007/s13369-020-04732-y
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DOI: https://doi.org/10.1007/s13369-020-04732-y