 | Superplasticity of liquid-Phase Sintered β-SiC
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| | | | The compression and the tension tests of liquid-phase sintered β-SiC fabricated by hot-pressing using ultra fine powders were performed at 1973K∼2048K in N2 atmosphere. Amorphous phases were observed at the grain boundaries and at multi-grain junctions in the as-sintered material. Strain hardening was observed under all experimental conditions. Stress exponents in the compression test were from 1.7 to 2.1 in the temperature ranging from 1973K to 2023K. A maximum tensile elongation of 170% was achieved at the initial strain rate of 2×10-5s-1 at 2048K. |
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