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Mechanical and tribological properties of aluminium incorporated with amorphous Ni60Nb40 particles
Indian Journal of Engineering & Materials Sciences ( IF 0.615 ) Pub Date : 2020-11-24
Subramanian Jayalakshmi, Ramachandra Arvind Singh, Sanjay Mohan, Xizhang Chen, Manoj Gupta

In this paper, development and characterization of pure aluminium (Al) reinforced with metallic amorphous Ni60Nb40 particles has been presented. Ni60Nb40 amorphous alloy reinforcement powder has been incorporated within Al-metal powder to produce Al-Ni60Nb40 composite. The composite has been sintered using bidirectional microwave sintering technique. Structure, indentation/tensile/compressive behaviour and tribological properties of the produced Al-10% Ni60Nb40 have been evaluated. It has been found that the: (i) reinforcement have retained the amorphous structure, (ii) reinforcement have distributed uniformly in the matrix and (iii) interface between the Al-matrix and the amorphous reinforcement has been free of reactive products. Upon comparison of mechanical properties with pure aluminium, the synthesized composite has showed significant enhancement in microhardness, tensile and compressive yield strengths. Under dry sliding wear condition, the composite has showed lower wear rates and lower coefficient of friction. The observed improvement in the composite behaviour has been explained using the processing-microstructure-mechanical properties correlation.

中文翻译:

掺有无定形Ni60Nb40颗粒的铝的机械和摩擦学性能

本文介绍了金属非晶态Ni 60 Nb 40颗粒增强的纯铝(Al)的开发和表征。将Ni 60 Nb 40非晶态合金增强粉末掺入铝金属粉末中,以生产Al-Ni 60 Nb 40复合材料。该复合材料已经使用双向微波烧结技术进行了烧结。制成的Al-10%Ni 60 Nb 40的结构,压痕/拉伸/压缩行为和摩擦学性能经过评估。已经发现:(i)增强物保留了非晶态结构,(ii)增强物均匀地分布在基体中,并且(iii)Al-基体和非晶态增强物之间的界面没有反应产物。通过与纯铝的机械性能比较,合成的复合材料在显微硬度,拉伸和压缩屈服强度方面显示出显着增强。在干滑动磨损条件下,复合材料显示出较低的磨损率和较低的摩擦系数。使用加工-微观结构-机械性能的相关性解释了观察到的复合材料性能的改善。
更新日期:2020-11-25
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