Physical Properties and Microstructural Characterization of Mechanically Alloyed and Sintered W-2wt%B4C-xwt%C (x=0, 0.25, 0.5, 1) Composites |
| S. Sönmeza,b and M.L. Öveçoğlu a
aIstanbul Technical University, Materials Science and Engineering Faculty, Ayazağa Campus, Particulate Materials Laboratories, 34469 Istanbul, Turkey bHakkari University, Engineering Faculty, Department of Mechanical Engineering, 30000 Hakkari, Turkey |
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| Mechanical alloying processes were carried out in a Spex mixer/mill to synthesize W-2wt% B4C-xwt% C (x=0, 0.25, 0.5, 1) powders for durations of 1 and 9 h in argon atmosphere. Mechanically alloyed powders were consolidated into green compacts by uniaxial cold press under 500 MPa and solid phase sintered at 1770°C under hydrogen and argon atmospheres for 1 h and 5 h. Effects of milling duration as well as C addition on the microstructural and mechanical properties of the sintered W-2wt% B4C-xwt% C composite samples were investigated. The microstructural and mechanical characterizations of the sintered samples were carried out by scanning electron microscope, energy dispersive X-ray spectroscopy, X-ray diffraction, and Vickers hardness analyses. Density measurements and hardness measurements of the sintered samples were also carried out. |
DOI: 10.12693/APhysPolA.131.193 PACS numbers: 81.05.Ni |