Investigation of effects of MgO ratio on the surface quality and tool wear in turning Al–MgO composites

Abstract

In this study, specimens of Al-MgO metal matrix composites with reinforcement-volume ratios of 5%, 10% and 15% were produced using vacuum infiltration method. The produced specimens were then tested for machining on computer numerical control lathe using carbide, cubic boron nitride and coated cubic boron nitride cutting tools. Machining tests were performed under dry cutting conditions with three different feed rates (0.075, 0.15 and 0.225 mm/rev), four different cutting speeds (150, 200, 250 and 300 m/min) and fixed depth of cut (1 mm). The test results indicate that surface roughness (Ra) values for machined composite specimens were reduced as the cutting speed was increased, but increased as the feed rate was increased. The highest Ra values were observed at cutting speed of 150 m/min and at feed rate of 0.225 mm/rev. In general, the most stable results were achieved with C tools. The scanning electron microscope images of cutting tools suggest that the tip of tools had built-up edge and abrasive wear mechanism was effective on all of the cutting tools; and C tools, in general, provided the most stable results.

Towards Analysis and Optimization for Contact Zone Temperature Changes and Specific Wear Rate of Metal Matrix Composite Materials Produced from Recycled Waste

“…After this sample, the 60C40G composite produced with 450 • C and 480 MPa shows the lowest specific wear rate. 6.…”

“…Investigations about combining the prominent aspects of metals to obtain new and versatile materials have gained momentum in the metal matrix composite (MMC) material field [1,2]. For MMC production, several metals can be used as a matrix or reinforcement material, such as aluminum, steel alloy, magnesium, brass, bronze, and cast irons [3][4][5][6][7][8].…”

“…Investigations about combining the prominent aspects of metals to obtain new and versatile materials have gained momentum in the metal matrix composite (MMC) material field [ 1 , 2 ]. For MMC production, several metals can be used as a matrix or reinforcement material, such as aluminum, steel alloy, magnesium, brass, bronze, and cast irons [ 3 , 4 , 5 , 6 , 7 , 8 ]. Bronze and cast iron, which are selected as the matrix and reinforcement materials, have received more attention than the other materials thanks to their extraordinary properties such as good surface integrity, high strength, and good tribological properties.…”

Milling of Graphene Reinforced Ti6Al4V Nanocomposites: An Artificial Intelligence Based Industry 4.0 Approach

“…In the case of the cubic boron nitride tools, the milling forces decreased when the cutting speed decreased, and the B4C reinforcement ratio increased. Pul [ 19 ] analyzed the machinability of MgO/Al composite with ratios of 5%, 10%, and 15% of MgO particles by turning. They found that the most favourable results were obtained with a MgO reinforcement ratio of 10 wt.% MgO and using carbide cutting tools.…”

On the impacts of cutting parameters on surface roughness, tool wear mode and size in slot milling of A356 metal matrix composites reinforced with silicon carbide elements

“…9 Research works into improving or quantifying the machinability of MMCs that has been undertaken since the early 1970s. [10][11][12][13] This is especially useful since carbide inserts are cheaper, and tool wear starts relatively quickly, allowing the evaluation of different parameters in order to determine their machinability and suitability for critical conditions. This is also ideal for evaluating the effects of cooling methods under similar conditions.…”