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首页> 外文会议>International conference on high temperature cermic matrix composites >Joining of Si-Ti-C-O Fiber Reinforced Ceramic Composite and Fe-Cr-Ni Stainless Steel
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Joining of Si-Ti-C-O Fiber Reinforced Ceramic Composite and Fe-Cr-Ni Stainless Steel

机译：加入Si-Ti-C-O纤维增强陶瓷复合材料和Fe-Cr-Ni不锈钢

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摘要

Joining of Si-Ti-C-O fiber reinforcedceramic composite and Fe-Cr-Ni stainless steel withAg-Cil-Ti brazing alloy was carried out. The joininginterfaces were perpendicular to the direction offibers. For relaxation of thermal stress caused bythermal expansion mismatch between the composite andthe stainless steel during cooling, a pure copper thinplate was set between the specimens to be joined.Joining strength was evaluated by bending test at roomtemperature. The highest strength of composite/metaljoint attained in this study was 230 MPa. The scatteringof the strength data was narrow. The composite-sidefracture surfaces of the high strength joints weredivided into many regions by fiber/matrix interfacialcracks. It was inferred that those interfacial cracks,which were perpendicular to the main crack along thejoining interface, decreased the stress intensityfactor of the main crack and increased the strength ofthe joints. On the other hand, no fiber/matrixinterfacial crack was observed on the fracture surfacesof a weak composite/composite joint. Formation of manyholes on the composite surfaces to be joined by etchingcaused damage to the fibers during joining, and had anadverse effect on the joining strength.
机译：进行了Si-Ti-C-O纤维增强陶瓷复合材料和Fe-Cr-Ni不锈钢与CIL-TI钎焊合金的连接。连接interfaces垂直于方向下降。为了放松热应力，在冷却过程中复合和不锈钢之间的热膨胀不匹配，在待加入的试样之间设定纯铜薄薄板。通过在室温下弯曲试验来评估加元的强度。本研究中达到的复合材料/金属的最高强度为230MPa。强度数据的散射很窄。通过纤维/基质intercacialcracks将高强度接头的复合侧剖视图涉及许多地区。推断，这些界面裂缝垂直于沿加入界面的主裂缝，降低了主要裂纹的应力强度，并增加了关节的强度。另一方面，在弱复合材料/复合接头的骨折表面上没有观察到纤维/基质接口裂缝。在复合表面上形成多孔，以通过在连接过程中蚀刻到纤维的抗被蚀刻而连接，并且对连接强度进行了分数的影响。

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