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压力浸渍法是制造金属基复合材料方便而廉价的方法。在这种工艺过程中,能独立控制纤维预制件温度T_p、熔融金属温度T_m、浸渍压力P和冷却速度等重要工艺参数。在金属基复合材料中,纤维与基体间的界面反应使纤维强度下降,复合材料性能恶化,从而限制了复合材料的广泛使用。本文主要研究如何控制无涂层的P-55纤维与1100Al和Al-0.34％Ti合金之间的界面反应,讨论压力浸渍法工艺参数对P55/Al和P55/Al-Ti复合材料组织、性能的影响。结果表明:通过控制工艺参数来缩短纤维与熔融金属铝之间的接触时间和在基体中加入钛元素以降低碳在熔融铝中的活性可以制造出高性能的复合材料。
Pressure impregnation is a convenient and inexpensive method of making metal matrix composites. During this process, important process parameters such as fiber preform temperature T_p, molten metal temperature T_m, impregnation pressure P and cooling rate can be independently controlled. In metal matrix composites, the interfacial reaction between fiber and matrix decreases the fiber strength and deteriorates the composite properties, which limits the widespread use of composites. In this paper, we mainly study how to control the interfacial reaction between uncoated P-55 fiber and 1100Al and Al-0.34% Ti alloy. The effects of pressure impregnation process parameters on microstructure and properties of P55 / Al and P55 / Al-Ti composites influences. The results show that high performance composite can be fabricated by controlling the process parameters to shorten the contact time between fiber and molten aluminum and adding titanium to the matrix to reduce the activity of carbon in molten aluminum.