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Effect of the Aluminum Matrix on Tensile Properties of Carbon Fiber/Al Composites Prepared by Liquid Extrusion Infiltration
Strength of Materials ( IF 0.7 ) Pub Date : 2020-11-09 , DOI: 10.1007/s11223-020-00212-8
Y. Q. Ma

Two-dimensional T300 carbon fiber-reinforced aluminum alloy matrix (2D CF/Al) composites were prepared by the liquid extrusion infiltration (LEI) process with the matrices of 6061Al and ZL102 alloys. Scanning electron microscopy (SEM) detected a satisfactory infiltration effect for both composites. The fiber distribution was uniform, and casting microdefects were not revealed. Transmission electron microscopy (TEM) analysis disclosed the matrix-carbon fibers interface reaction, the brittle Al4C3 phase. Al4C3 sizes were found to be about 150 and 400 nm in 2D CF/6061Al and 2D CF/ZL102 composites, respectively, the interface reaction of a ZL102 matrix was more pronounced. As compared to pure cast alloys, the ultimate tensile strength increased by 134.5. SEM analysis of the tensile specimen fracture demonstrated that the fracture of a 2D CF/6061Al composite was reasonable and for a 2D CF/ZL102 composite it was via the brittle mode, these were caused by the interface bonding.



中文翻译:

铝基体对液体挤出浸渗碳纤维/铝复合材料拉伸性能的影响

通过液相挤压浸渗(LEI)工艺,以6061Al和ZL102合金为基体,制备了二维T300碳纤维增强铝合金基体(2D CF / Al)复合材料。扫描电子显微镜(SEM)检测到两种复合材料均具有令人满意的渗透效果。纤维分布均匀,并且没有发现铸造的微缺陷。透射电子显微镜(TEM)分析揭示了基体-碳纤维的界面反应,即脆性的Al 4 C 3相。铝4 C 3发现在2D CF / 6061A1和2D CF / ZL102复合材料中,粒径分别约为150和400 nm,ZL102基质的界面反应更加明显。与纯铸造合金相比,极限抗拉强度提高了134.5。拉伸试样断裂的SEM分析表明,2D CF / 6061Al复合材料的断裂是合理的,而对于2D CF / ZL102复合材料,断裂是通过脆性模式造成的,这是由于界面粘结引起的。

更新日期:2020-11-09
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