Prasad Lalta, Kumar Niteesh, Yadav Anshul, Kumar Anil, Kumar Virendra, Winczek Jerzy
Department of Mechanical Engineering, National Institute of Technology Uttarakhand, Srinagar 246174, Uttarakhand, India.
Department of Mechanical Engineering, GB Pant Institute of Engineering and Technology, Garhwal 246194, Uttarakhand, India.
Materials (Basel). 2021 Apr 23;14(9):2141. doi: 10.3390/ma14092141.
In this work, aluminium alloy ADC12 reinforced with various amounts of ZrB (0 wt.%, 3 wt.%, 6 wt.%, 9 wt.%) were synthesized by an in-situ reaction of molten aluminium with inorganic salts KZrF & KBF XRD, EDAX, and SEM techniques are used for the characterization of the fabricated composite. XRD analysis revealed the successful in situ formation of ZrB in the composite. From the SEM images, it was concluded that the distribution of reinforcement was homogeneous in the composites. A study of mechanical and tribological properties under the dry sliding condition of ZrB-reinforced ADC12 alloy has also been carried out. It is seen that there is an increase in tensile strength by 18.8%, hardness by 64.2%, and an increase in wear resistance of the material after reinforcement. The ductility of the material decreased considerably with an increase in the amount of reinforcement. The composite's impact strength decreased by 27.7% because of the addition of hard ZrB particulates.
在本研究中，通过熔融铝与无机盐KZrF和KBF的原位反应合成了添加不同含量ZrB（0 wt.%、3 wt.%、6 wt.%、9 wt.%）的铝合金ADC12。采用XRD、EDAX和SEM技术对制备的复合材料进行表征。XRD分析表明复合材料中成功原位生成了ZrB。从SEM图像可知，复合材料中增强体的分布是均匀的。还对ZrB增强ADC12合金在干滑动条件下的力学和摩擦学性能进行了研究。结果表明，增强后材料的抗拉强度提高了18.8%，硬度提高了64.2%，耐磨性也有所提高。材料的延展性随着增强体含量的增加而显著降低。由于添加了硬质ZrB颗粒，复合材料的冲击强度降低了27.7%。
