Superplasticity in zirconia-dispersed alumina prepared by colloidal processing

被引：0

作者：

Hiraga, K ^{[1
]}

Suzuki, TS ^{[1
]}

Sakka, Y ^{[1
]}

Nakano, K ^{[1
]}

机构：

[1] Natl Res Inst Met, Tsukuba, Ibaraki 3050047, Japan

来源：

PROGRESS IN MECHANICAL BEHAVIOUR OF MATERIALS (ICM8), VOL 3: ADVANCE MATERIALS AND MODELLING OF MECHANICAL BEHAVIOUR | 1999年

关键词：

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Substantial superplasticity, where total tensile elongation to failure exceeds 500% at 1773 K, is attained in a zirconia-dispersed alumina by grain size refinement to less than 0.5 mu m through colloidal processing. The material shows gradual strain hardening persisting up to large strains owing to gradual grain growth and damage accumulation. In contrast, the grain size refinement to 0.45 mu m through conventional dry processing is not effective in enhancing tensile ductility. From the microstructural data of these materials, the prerequisites are discussed for obtaining large tensile ductility in zirconia-dispersed alumina.

引用

页码：981 / 986

页数：6

共 18 条

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