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
Full Text PDF
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