Effects of rolling and hot pressing on mechanical properties of boron carbide-based ceramics |
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Authors: | Nina Orlovskaya Sergey Yarmolenko Jag Sankar Jakob Kuebler Mykola Lugovy |
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Affiliation: | (1) University of Central Florida, Orlando, FL, USA;(2) North Carolina A&T State University, Greensboro, NC, USA;(3) Material Science and Technology, EMPA, Duebendorf, Switzerland;(4) Institute for Problems of Materials Science, Kyiv, Ukraine |
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Abstract: | A study of hot pressed B4C-based laminates, after rolling and without rolling, has been performed to elucidate the existence of fracture resistance/crack length anisotropy induced by this processing technique. While the crack lengths/fracture resistance was affected significantly by the presence of the residual stresses in B4C/B4C–ZrB2 laminates, no differences in Vickers crack lengths were observed in B4C/B4C laminates prepared by rolling and hot pressing, as compared to the crack lengths seen in pure B4C ceramics prepared by hot pressing without rolling. X-ray diffraction analysis confirmed that no texture has been formed during the rolling and hot pressing of B4C ceramics. |
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