Abstract
Factors limiting the strain rate available to superplastic deformation in oxide ceramics are discussed from existing knowledge about high-temperature plastic deformation and cavitation mechanisms. Simultaneously controlling these factors is essential for attaining high-strain-rate superplasticity (HSRS). This is shown in monolithic tetragonal zirconia and composite materials consisting of zirconia, α-alumina and a spinel phase: at strain rates higher than 10 -2 s -1 , tensile ductility reached 300-600% in the monolithic material and 600-2500% in the composite materials. Post-deformation microstructure indicates that certain secondary phases should be effective in suppressing cavitation damage and thereby enhancing HSRS.
| Original language | English |
|---|---|
| Pages (from-to) | 191-197 |
| Number of pages | 7 |
| Journal | Journal of the Ceramic Society of Japan |
| Volume | 113 |
| Issue number | 1315 |
| DOIs | |
| Publication status | Published - 2005 Jan 1 |
| Externally published | Yes |
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Keywords
- Accommodation
- Cavity growth
- Cavity nucleation
- Dynamic grain growth
- Grain-boundary sliding
- High-strain-rate superplasticity
- Stress relaxation
ASJC Scopus subject areas
- Ceramics and Composites
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry
Cite this
Microstructural design for high-strain-rate superplastic oxide ceramics. / Hiraga, Keijiro; Kim, Byung Nam; Morita, Koji; Suzuki, Tohru; Sakka, Yoshio.
In: Journal of the Ceramic Society of Japan, Vol. 113, No. 1315, 01.01.2005, p. 191-197.Research output: Contribution to journal › Review article
}
TY - JOUR
T1 - Microstructural design for high-strain-rate superplastic oxide ceramics
AU - Hiraga, Keijiro
AU - Kim, Byung Nam
AU - Morita, Koji
AU - Suzuki, Tohru
AU - Sakka, Yoshio
PY - 2005/1/1
Y1 - 2005/1/1
N2 - Factors limiting the strain rate available to superplastic deformation in oxide ceramics are discussed from existing knowledge about high-temperature plastic deformation and cavitation mechanisms. Simultaneously controlling these factors is essential for attaining high-strain-rate superplasticity (HSRS). This is shown in monolithic tetragonal zirconia and composite materials consisting of zirconia, α-alumina and a spinel phase: at strain rates higher than 10 -2 s -1 , tensile ductility reached 300-600% in the monolithic material and 600-2500% in the composite materials. Post-deformation microstructure indicates that certain secondary phases should be effective in suppressing cavitation damage and thereby enhancing HSRS.
AB - Factors limiting the strain rate available to superplastic deformation in oxide ceramics are discussed from existing knowledge about high-temperature plastic deformation and cavitation mechanisms. Simultaneously controlling these factors is essential for attaining high-strain-rate superplasticity (HSRS). This is shown in monolithic tetragonal zirconia and composite materials consisting of zirconia, α-alumina and a spinel phase: at strain rates higher than 10 -2 s -1 , tensile ductility reached 300-600% in the monolithic material and 600-2500% in the composite materials. Post-deformation microstructure indicates that certain secondary phases should be effective in suppressing cavitation damage and thereby enhancing HSRS.
KW - Accommodation
KW - Cavity growth
KW - Cavity nucleation
KW - Dynamic grain growth
KW - Grain-boundary sliding
KW - High-strain-rate superplasticity
KW - Stress relaxation
UR - http://www.scopus.com/inward/record.url?scp=17144386671&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=17144386671&partnerID=8YFLogxK
U2 - 10.2109/jcersj.113.191
DO - 10.2109/jcersj.113.191
M3 - Review article
VL - 113
SP - 191
EP - 197
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 1315
ER -