Abstract
The current research paper discusses the characterization and machining (turning) operation of aluminium (Al) and silicon carbide nano particle (SiCp) nano composite. The paper reveals proper distribution of silicon carbide nano particles (25nm) with aluminium metal matrix. Initially, tensile test has been carried on metal matrix nano composite to study its different properties. It was noticed that the properties of Al-SiCp increases by increasing the weight percentage of SiCp. Viker hardness test has also been conducted to find out the hardness of metal matrix nano composites. Different techniques i.e. Optical microscopy EDX-Analysis were utilized to find out various ingredients of the nano-composite material. The experimental study was carried out using Taguchi L16orthogonal array by taking three different factors at four different levels each. The response parameters i.e. flank wear of coated carbide insert and surface roughness of Al-SiCp has been optimized by using Principal Component Analysis (PCA). Various graphs like main effect plot and normal probability plot have been plotted and studied properly. Different optical images of coated insert carbide tools (Insert CNMG 12040822TN 6010) at different runs were conducted to visualize the effects of process and response parameters. From the ANOVA table, it was found that cutting speed as well as depth of cut are found to the most vital parameters in influencing the responses for VBc and depth of cut and feed are found to the most significant parameters in influencing the responses for Ra.
Highlights
The metal matrix nano composites and its applications are increasing in day today’s life in both automobile and aerospace industries because of their improved properties
A particular portion of the section is magnified at 100 mm zoom and EDAX analysis is performed on Al + silicon carbide nano particle (SiCp) (2 wt.%) to know the chemical characterization of the sample. 2 wt.% sample is chosen as adding more than 2 wt.% of SiCp in aluminium metal matrix composite can cause high viscosity and it will not be convenient to mix with SiCp nano particles uniformly
It is observed from the figure that grain boundaries and minute cracks are formed on Al + SiCp nano composite material after the machining process
Summary
The metal matrix nano composites and its applications are increasing in day today’s life in both automobile and aerospace industries because of their improved properties. A days the people demand for innovative and new technologies products to sustain in the global economy. Excellent high strength to weight ratio, higher mechanical and physical properties has led to a better interest and demand in different industries of various materials in which saving of material is a critical issue. Aluminium matrix composites have been widespread its applications and uses due to its high wear resistance and low cost. Metal matrix nano composites recently gained its popularity due to change in its physical properties i.e. thermal expansion, thermal diffusivity, density and mechanical properties i.e. tribological behavior, tensile, P.K. Swain et al.: Mechanics & Industry 21, 307 (2020)
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