Deformation mechanisms in α-phase silicon nitride ceramics

被引：0

作者：

Schneider, JA ^{[1
]}

Mukherjee, AK ^{[1
]}

机构：

[1] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA

来源：

JOURNAL OF MATERIALS PROCESSING & MANUFACTURING SCIENCE | 1998年 / 7卷 / 01期

关键词：

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Changes of phase composition and morphology were investigated in Si3N4 both before and after compressive deformation testing. Si3N4 specimens, with 5 wt% Y2O3 and 5 wt% MgAl2O4 additives, were rapidly consolidated to preserve the initial, metastable a-phase present in the Si3N4 starting powders. Constant strain rate compression tests were used to evaluate the strain rate dependency of the flow stress. At 1723 K, a flow stress dependency value of n = 2 was observed.

引用

页码：51 / 57

页数：7

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