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三维连通网状SiC陶瓷／Zr基非晶复合材料室温单轴压缩断裂行为
Quasistatic Mechanical Properties of 3D-Net SiC/Zr-Based Amorphous Matrix Composites at Room Temperature
查看参考文献9篇
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文摘
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在室温下，利用WDW—E100D万能试验机和SEM研究了三维连通网状结构SiC陶瓷／Zr基非晶复合材料的准静态单轴压缩变形和断裂行为．结果表明，复合材料的轴向压缩断裂强度达到了1270MPa，在压缩条件下复合材料的断裂发生在弹性变形阶段，断裂前观察不到塑性变形；试样发生纵向劈裂和剪切断裂；三维连通网状结构SiC陶瓷是主要的承载单元，断口形貌为层片状、台阶式的解理断裂；非晶合金发生粘性流动，在变形过程中形成纹脉状断口形貌．出现典型的热软化效应． |
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其他语种文摘
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The deformation and fracture behaviors of 3D-net SiC/Zr-based amorphous composites have been investigated with the WDW-E100D testing machine and scanning microscopy （SEM） under monaxial compression at room temperature. It is found th compressive strength of the composites reaches 1 270 MPa. Under compressive loading, the matrix electron at, the samples exhibit elastic deformation followed by catastrophic failure without obvious yielding. The mode of failure of the composites is a mixture combining splitting and shear fracture. The 3D-net ceramic is the dominating cell bearing the weight; the microcosmic failure mechanical are typical cleavage fracture of 3D-net SiC, and inhomogenous flow deformation of amorphous alloys viscous flow traces, vein patterns and localized melting can be seen on the fracture surface of the amorphous alloys matrix. |
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来源
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北京理工大学学报
,2006,26(8):741-744 【核心库】
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关键词
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三维连通网状SiC陶瓷／Zr基非晶复合材料
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准静态压缩
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断裂机理
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地址
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1.
北京理工大学材料科学与工程学院, 北京, 100081
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中国科学院金属研究所, 辽宁, 沈阳, 110015
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-0645 |
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学科
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一般工业技术 |
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文献收藏号
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CSCD:2571913
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