An investigation on microstructure and mechanical behaviour of copper-nickel coated carbon fibre reinforced aluminium composites
An investigation on microstructure and mechanical behaviour of copper-nickel coated carbon fibre reinforced aluminium composites
复制标题
铜镍涂层碳纤维增强铝基复合材料的组织与力学性能研究
DOI：
10.1088/2053-1591/abcb4c
复制
发表时间：
2020-11-01
影响因子：
2.3
通讯作者：
Anbuchezhiyan, G.
中科院分区：
文献类型：
--
作者：
Gajalakshmi, K.;Senthilkumar, N.;Anbuchezhiyan, G.
在本调查中，机械，腐蚀和疲劳特性进行制造的铝金属基复合材料（AMMC），通过增强镍（Ni）和铜（Cu）涂层的4%的碳纤维（CF）在铝合金（AA 6026）矩阵。为了提高铝合金的强度，碳纤维的最佳百分比（4wt%）是增强;由于碳纤维不能直接增强在铝基体中，由于润湿性差，使用化学镀技术与Ni和Cu的碳纤维涂覆增强体和基体之间更好的润湿性和结合。比较了铸态合金和涂层碳纤维增强复合材料的性能，确定了性能较好的复合材料为4%Cu涂层碳纤维增强AMMC。与铸态合金和镍包碳纤维增强复合材料相比，铜包碳纤维增强复合材料的抗拉强度分别提高了15.36%和2.55%。显微硬度分别提高了7.61%和3.09%，冲击强度分别提高了19.61%和3.39%，弯曲强度分别提高了87.50%和15.38%。与铸态和Ni涂覆的CF增强组合物相比，在AA 6026中加入4%Cu涂覆的CF的腐蚀速率（密耳/年）降低了59.72%和23.23%。
In the present investigation, mechanical, corrosion and fatigue characterization is performed on the fabricated aluminium metal matrix composite (AMMC), by reinforcing nickel (Ni) and copper (Cu) coated 4% carbon fibre (CF) in aluminium alloy (AA6026) matrix. With a view of enhancing the strength of the aluminium alloy, an optimal percentage (4 wt%) of CFs is reinforced; as CFs cannot be directly reinforced in the aluminium matrix due to poor wettability, CFs are coated with Ni and Cu using electroless plating technique for better wettability and bonding between reinforcement and matrix. Properties of the cast alloy and coated CF reinforced composite are compared and the composite with better properties is identified as 4% Cu coated CFs reinforced AMMC. When compared with as-cast alloy and Ni coated CF reinforced composite, the tensile strength of Cu coated CFs composite was higher by 15.36% and 2.55%. Similarly, micro-Vickers hardness was improved by 7.61% and 3.09%, impact strength by 19.61% and 3.39%, flexural strength by 87.50% and 15.38%. The corrosion rate (mils/year) was reduced with incorporation of 4% Cu coated CFs in AA6026 by 59.72% and 23.23% as compared with as-cast and Ni coated CF reinforced composition.