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文摘
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利用Hopkinson压杆冲击加载装置和扫描电子显微镜(SEM),对SiC骨架/Zr基非晶合金复合材料圆柱形试样进行了相关的应力-应变响应和动态断裂特征及断口形貌的研究.结果表明:SiC骨架/Zr基非晶合金复合材料的动态压缩强度随冲击压力的增大而递增,当冲击压力为0.6 MPa时,复合材料的动态压缩强度为855 MPa;断裂表面呈现典型的结晶状断口,断裂模式为脆性断裂和劈裂混合破坏模式;非晶基体在动态压缩条件下出现了显著的热软化和熔化特征. |
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其他语种文摘
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Dynamic mechanical properties and fracture characteristics as well as the fracture surfaces of SiC] skeleton/Zr - based amor-phous matrix composites are investigated by means of Hopkinson' s pressure bar and SEM. Tile experimental results show that the dynamic; oompressive strength of 'SiC skeleton/Zr - based amorphous matrix composites increases with the hit pressure increasing. The dynamic compressivc strength of the composites is 885 Ml'a at 0. 6 MPa hit pressure, and the failure mode is of a mixed frac-ture mode combining crystal fragile Iraelure with splitting. The typical melt and thermal - softening characteristic of Zr - based amor-phous matrix are found in the dynamic compressivc process. |
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来源
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兵器材料科学与工程
,2005,28(3):14-16 【核心库】
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关键词
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碳化硅骨架/锆基非晶合金复合材料
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动态性能
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动态断裂
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断口形貌
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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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1004-244X |
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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:1990549
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