The invention relates to the field of composite materials, in particular to a silicon carbide fiber reinforced metal matrix composite material bearing beam structure and a preparation method thereof. The composite material bearing beam adopts an integrated compact design, the silicon carbide fiber is located in the beam edge strip, the beam edge strip and the web are integrally manufactured, and additional mechanical fixing devices such as screws and rivets are not needed. Firstly, a groove is machined in the edge strip part of the composite force-bearing beam mold, a fiber laying position is reserved, then a metal coating is deposited on the surface of silicon carbide fiber, the fiber with the metal coating is arranged to be manufactured into a prefabricated belt, the prefabricated belt is cut, stacked and integrally placed in the groove of the edge strip of the composite force-bearing beam mold, and the composite force-bearing beam mold is manufactured. And forming by adopting a hot isostatic pressing process after vacuum sealing, and finally machining to obtain the silicon carbide fiber reinforced metal matrix composite material bearing beam structural member. The continuous monofilament silicon carbide fiber is adopted as the reinforcement, the bearing capacity of the beam structural part can be improved, and the weight of the beam structural part is reduced.
本发明涉及复合材料领域,具体涉及一种碳化硅纤维增强金属基复合材料承力梁结构及其制备方法。复合材料承力梁采用一体式紧凑型设计,碳化硅纤维位于梁缘条内部,梁缘条和腹板采取整体制造,不需要额外的螺钉、铆钉等机械固定装置。首先在复合材料承力梁模具缘条部分加工出凹槽预留纤维铺放位置,然后在碳化硅纤维表面沉积金属涂层,再将具有金属涂层的纤维排布制成预制带,预制带裁剪后堆叠整体放入复合材料承力梁模具缘条凹槽内部,真空密封后采用热等静压工艺成型,最终经过机械加工得到碳化硅纤维增强金属基复合材料承力梁结构件。本发明采用连续单丝碳化硅纤维作为增强体,能够提高梁结构件承载能力,减轻梁结构件的重量。
Silicon carbide fiber reinforced metal matrix composite material bearing beam structure and preparation method thereof
一种碳化硅纤维增强金属基复合材料承力梁结构及其制备方法
2023-06-23
Patent
Electronic Resource
Chinese
Continuous silicon carbide fiber reinforced metal matrix composites
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