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Effect of Cr<sub>3</sub>C<sub>2</sub> and VC on the Mechanical and Structural Properties of Sintered WC-10wt%Co Nano Powders
Metallurgy and Material Engineering, Islamic Azad University Saveh Branch, Saveh, Iran
Metallurgy and Material Engineering, Maham Research Center, Tehran, Iran
Metallurgy and Material Engineering, Iran University of Industries and Mines (IUIM), Tehran, Iran
- 1 Metallurgy and Material Engineering, Islamic Azad University Saveh Branch, Saveh, Iran
- 2 Metallurgy and Material Engineering, Maham Research Center, Tehran, Iran
- 3 Metallurgy and Material Engineering, Iran University of Industries and Mines (IUIM), Tehran, Iran
World Journal of Nano Science and Engineering·Volume 03 (2013)·Pages 35–39·Published 18 June 2013·DOI10.4236/wjnse.2013.32005
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Abstract
The effect of addition of metallic carbides Cr 3 C 2 and Cr 3 C 2 + VC on structure and mechanical properties of WC-10 wt% Co nanocomposites have been studied. After preparing and compacting of the powders under pressure of 200 MPa, the samples were sintered at temperatures of 1370°C, 1410°C and 1450°C for 1 hour. Microstructural examinations by SEM show that the average grain size obtained for Cr 3 C 2 + VC added alloys reduced 50 percent and also grain size dis tribution was narrower compared to those samples without grain growth inhibitors. Furthermore, co-addition of Cr 3 C 2 and VC rise to a higher Vickers hardness and fracture toughness of the sintered alloys at 1410°C.
KeywordsWC-10CoCr<sub>3</sub>C<sub>2</sub>VCHardnessFracture ToughnessGrain Size
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