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High temperature compression properties and failure mechanism of 3D needle-punched carbon/carbon composites

机译:3D针刺碳/碳复合材料的高温压缩性能和破坏机理

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摘要

This paper reports the high temperature compression properties and failure mechanism of 3D needle-punched C/C composites. The results show that the stress-strain curves show non-linear and plasticity failure feature after 600 ℃. The compression properties decrease significantly with increasing the temperature due to material oxidation. The composite exhibits shear fracture at the angle of 45°. The major damage patterns are the tearing of 90° oriented fibers and shear failure of 0° oriented fibers on the shear surface. After 600 ℃, the local and plastic failure feature becomes more obvious. The composite is oxidized obviously and fiber/matrix interfacial adhesion is decreased significantly.
机译:本文报道了3D针刺C / C复合材料的高温压缩性能和破坏机理。结果表明,应力-应变曲线在600℃后呈现非线性和塑性破坏特征。由于材料氧化,压缩性能会随着温度的升高而显着降低。该复合材料在45°角处表现出剪切断裂。主要的损坏模式是90°取向纤维的撕裂和0°取向纤维在剪切面上的剪切破坏。 600℃后,局部和塑性破坏特征变得更加明显。复合材料被明显氧化,纤维/基质界面的粘合力明显降低。

著录项

  • 来源
    《Materials Science and Engineering》 |2015年第5期|105-110|共6页
  • 作者单位

    Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, School of Chemistry and Environment, Beijing University of Aeronautics and Astronautics, Beijing 100191, PR China,State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Chinese Academy of Sciences, Shanghai 200050, PR China;

    Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, School of Chemistry and Environment, Beijing University of Aeronautics and Astronautics, Beijing 100191, PR China;

    Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, School of Chemistry and Environment, Beijing University of Aeronautics and Astronautics, Beijing 100191, PR China;

    China Academy of Machinery of Science & Technology, Beijing 100044, PR China;

    Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, School of Chemistry and Environment, Beijing University of Aeronautics and Astronautics, Beijing 100191, PR China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Carbon/carbon; 3D needle-punched composites; Compression properties; Failure mechanism; High temperature;

    机译:碳/碳;3D针刺复合材料;压缩性能;失效机制;高温;

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