Investigation of Cutting Force, Surface Roughness and Flank Wear in Turning of In-situ Al6061-TiC Metal Matrix Composite

In-situ aluminum matrix composites have good bonding strength and homogeneous distribution of particles, which offer improved mechanical property and wear resistance. Electrical discharge machining is considered as a suitable process for making complicated shape of difficult to machine materials. In this experimental work AA6061-6% TiB2/ZrB2in-situ metal matrix composite was fabricated using flex assisted synthesis. This experimental investigation is focused to study the influence of electrical discharge machining process parameter on surface roughness in machining of the AA6061-6% TiB2/ZrB2composite. Taguchi method and L9orthogonal lay out are applied to conduct the experimental work. Analysis of variance was performed to evaluate the percentage of contribution of each parameter. The analysis of the result indicates that discharge current has strongest influence on the surface roughness. This experimental study helps to select the optimal machining parameter to achieve good surface finish.

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Mechanical Behavior and Microstructure Evolution of Al-5%Cu/TiC Metal Matrix Composite

Journal of New Materials for Electrochemical Systems ◽

10.14447/jnmes.v23i4.a05 ◽

2020 ◽

Vol 23 (4) ◽

pp. 252-255

Author(s):

L. Ponraj Sankar ◽

R. Kamalakannan ◽

G. Aruna ◽

M.R. Meera ◽

V. Vijayan ◽

...

Keyword(s):

Surface Roughness ◽

Aluminum Alloy ◽

Wear Rate ◽

Cutting Force ◽

Metal Matrix Composite ◽

Matrix Composite ◽

Metal Matrix ◽

Cutting Tool ◽

Cutting Speed ◽

Depth Of Cut

This paper aims to analyze the mechanical characteristics of Al-5%Cu/TiC metal matrix composite, like Surface Roughness, Tensile strength, wear rate of the cutting tool. Copper particles added with aluminum alloy, which can improve the machinability and also reduce wear rate. Typically the titanium materials prefer for its excellent strength during the load-carrying process. Here the TiC particles added with aluminum alloy to increase the composite hardness range. The casting samples are machined by the uncoated carbide cutting tool in CNC. The input turning parameters are speed, depth of cut, feed rate, and cutting force. The surface roughness measurement was done after the machining operation. The build-up edge and microstructure behavior of the tool and workpiece were analyzed using Scanning Electron Microscope. The result shows the more Built-up edge formed at low cutting speed and less build-up edge formed at low cutting speed. The higher cutting force indicates the lower cutting speed of 50m/min. The Build-up edges investigated at lower cutting speed and higher cutting speed. While adding TiC in Al-5%Cu, the elongation of MMC reduced, so it can able to increase the strength of the MMC specimen. Based on these results can able to predict the good mechanical and surface properties of metal matrix composite for the specific application.

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