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采用多层喷射沉积技术制备了SiC_p/Al-8.5Fe-1.3V-1.7Si复合材料板坯,再通过多道次楔形压制制备了复合材料板材。介绍了楔形压制喷射沉积铝基复合材料的压制设备、成形原理与过程;研究了板坯在楔形压制过程中孔洞、SiC_p分布、弥散粒子和SiC-Al界面的演变。结果表明,楔形压制工艺能有效致密喷射沉积板坯,当压下量为50%时,沉积颗粒边界消除,相对密度达97.6%,且能使SiC_p分布均匀,但因剪切作用小,弥散分布的微型孔洞未能完全消除;板坯在480℃下多道次楔形压制,弥散粒子依然保持在60~100nm,未见明显长大,且未向Al13Fe4等平衡相转变,SiC-Al界面干净,纳米过渡层可以提高界面润湿性。
The SiC_p / Al-8.5Fe-1.3V-1.7Si composite slab was prepared by multi-layer spray deposition technology, and the composite plate was prepared by multi-pass wedge pressing. The pressing equipment, forming principle and process of wedge-shaped injection-sprayed aluminum matrix composites were introduced. The evolution of pores, SiCp distribution, dispersed particles and SiC-Al interface during the wedge pressing process was studied. The results show that the wedge-shaped pressing process can effectively and compactly spray sedimentary slab. When the reduction is 50%, the boundary of sedimentary particles is eliminated and the relative density is 97.6%, and the distribution of SiC_p can be uniform. However, due to the small shearing effect and the dispersive distribution The micro-pores of the slab can not be completely eliminated. The slabs are multi-pass wedged at 480 ° C, and the dispersed particles remain at 60-100nm without obvious growth. The equilibrium phase of Al13Fe4 does not change and the interface of SiC-Al is clean, Nano-transition layer can improve the interface wettability.