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This article presents the study of machinability of ZA43 alloy reinforced with silicon carbide particulate metal matrix composites. The specimen was fabricated through conventional liquid metallurgy technique. Silicon carbide with particle size of 60 mm with three different weight percentages (i.e. 5%, 10%, and 15%) was used for fabrication. Dry turning of composite specimens was carried out using uncoated and coated carbide indexible inserts on a conventional lathe. Comparisons of performance of each grade of the cutting tool were carried out in the experiment wherein 162 experiments were executed with the aim of determining surface roughness on the machined area of the composite and wear land on the flank portion of the cutting tool. The results were recorded and analyzed with a statistical analysis tool (analysis of variance) to identify the significant parameter influencing both surface roughness and flank wear. It was observed that cutting speed, feed, and depth of cut were the parameters affecting the surface finish and responsible for higher tool wear. The composition of the material also had substantial effect in deciding the surface roughness value and tool wear land.

The present paper reveals the wear behaviour of Zinc -Aluminium alloy reinforced with SiC particulate metal matrix composite. The composite is prepared using liquid metallurgy technique. The unlubricated pin-on disc wear test is conducted to find the wear behaviour of the ZA43 alloy based composite. The sliding wear test is conducted for different load, speed and time. The result reveals that wear rates of composite is reduced as reinforcement increases. For the same working conditions wear rate increases with increasing load and with increasing speed. The tested samples are examined by taking micro structure photos and analyzed for the type of wear. Dominating wear types observed are delamination and abrasion.

The present paper reveals the machinability properties of Zinc-Aluminium alloy reinforced with SiC particulate metal matrix composite. The composite was prepared using liquid metallurgy technique. In this study, MMC Zn-57%Al-43% was fabricated by SiC (1% and 5%) with average particle size of 30µm. Full factorial design was used to plan the experiments (54 trials) and ANOVA method was used to analyze the results. Coated carbide tool CCMT9T304 was used in the experiment. Dry turning was employed with spindle speeds of 32, 48 and 73 m/min and feed rates of 0.2, 0.3 and 0.5 mm/rev and depths of cut of 0.25, 0.5 and 0.75 mm. It was observed from the results that cutting force was significantly affected by speed, feed and depth of cut where as surface finish was affected greatly by speed and feed. Depth of cut has less effect on surface finish.

In the present investigation, machinability issues of zinc–aluminium (ZA43) alloy reinforced with silicon carbide particles (SiC) were evaluated. The fabrication of composite was done through liquid metallurgy technique. Metal matrix composite (MMC) was subjected to turning using conventional lathe with three grades of cutting tools, namely, uncoated carbide tool, coated carbide tool and ceramic tool. Surface roughness and tool wear were measured during the machining process. Results reveal that roughness increases with increase in the reinforcement concentration and particle size. Feed has direct influence on roughness, i.e. surface deteriorates with higher feeds. Depth of cut has very minimum effect on the surface roughness, while inverse effect of cutting speed on the roughness was observed (i.e. increase in the cutting speed leads to better finish on the specimen). Tool wear was studied during the investigation, and it was noticed that MMC with higher reinforcement concentration and particle size cause severe wear on the flank of the cutting tool. Increase in the cutting speed, feed and depth of cut also increases the flank wear on the tool. Out of all the three grades of tools, coated carbide tool outperformed uncoated carbide and ceramic tools.