Off-axis creep behavior of oxide/oxide NeXtel™720/AS-0

被引：10
作者：
Buchanan, Dennis J. [1 ]
John, Reji [2 ]
Zawada, Larry P. [2 ]
机构：
[1] Univ Dayton, Res Inst, Dayton, OH 45469 USA
[2] Wright Patterson AFB, AF Res Lab, Mat & Mfg Div, Wright Patterson AFB, OH 45433 USA
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2008年 / 68卷 / 06期
关键词：
ceramic-matrix composites; creep; high-temperature properties; stress/strain curves; creep rate; deformation;
D O I：
10.1016/j.compscitech.2007.12.013
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Oxide/oxide ceramic-matrix composites (CMC) are being demonstrated in engine components that are axisymmetric in shape, and subject to axisymmetric thermo-mechanical loadings. Traditionally, woven CMC materials used in these components are made from 0 degrees/90 degrees fiber architectures. In many cases, the highest stresses are not always coincident with the orientation of the reinforcing fibers. Tensile and creeps tests at 1100 degrees C on a +/- 45 degrees CMC composed of Nextel (TM) 720 fibers and a alumina-silica matrix (AS-0) have been performed. The +/- 45 degrees orientation has approximately two-thirds the ultimate tensile strength of the 0'/90' orientation. The creep rupture strength at 100 h for the +/- 45 degrees orientation is approximately one-third that of the 0 degrees/90 degrees orientation. Published by Elsevier Ltd.
引用
收藏
页码：1313 / 1320
页数：8
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