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Superplasticity of Liquid-Phase Sintered β-SiC

Published online by Cambridge University Press:  10 February 2011

T. Nagano ,
K. Kaneko ,
G.D. Zhan  and
M. Mitomo
T. Nagano
Affiliation:
Ceramics Superplasticity Project, ICORP, Japan Science and Technology Corporation, 2-4-1, Mutsuno, Atsuta-ku, Nagoya 456-8587, [email protected]
K. Kaneko
Affiliation:
Ceramics Superplasticity Project, ICORP, Japan Science and Technology Corporation, 2-4-1, Mutsuno, Atsuta-ku, Nagoya 456-8587, [email protected]
G.D. Zhan
Affiliation:
National Institute for Research in Inorganic Materials, 1-1, Namiki, Tsukuba 305-0044, Japan
M. Mitomo
Affiliation:
National Institute for Research in Inorganic Materials, 1-1, Namiki, Tsukuba 305-0044, Japan
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Abstrtact

The compression and the tension tests of liquid-phase sintered β-SiC fabricated by hot-pressing using ultra fine powders were performed at 1973 K ∼ 2048 K in N2 atmosphere. Amorphous phases were observed at the grain boundaries and at multi-grain junctions in the assintered 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 1973 K to 2023 K. A maximum tensile elongation of 170 % was achieved at the initial strain rate of 2 Χ 10−5 s−1 at 2048 K.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 601: Symposium HH – Superplasticity-Current Status & Future Potential , 1999 , 133
Copyright
Copyright © Materials Research Society 2000

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