Abstract
Comparison of Mechanical Properties of Aluminium - Boron Carbide at Micron and Nanometer Size Grain Particles using Powder Metallurgy
Highlights
Metal matrix composites (MMCs) are emerging as latest engineering materials due to their strength, ductility and hardness
Hardness of the specimen is measured by using Vickers hardness tester Scanning electron microscopy (SEM) and microstructure micrographs show that the sintered Al-CNTs-SiCp
It improve the coefficient of friction and wear resistance of aluminium hybrid composites has been achieve remaining to addition of solid lubricant (MoS2) next to hard ceramic reinforcement particles boron carbide in the matrix alloy
Summary
There are two different size sample are prepared one is for tensile test and one is for hardness test. For hardness test each sample pellet is weight 8 gram and the metal powders are taken according to their weight percentage after compression the size of the pellet formed is 20mm diameter and 10 mm height as shown in figure 1. For tensile test each sample pellet weight is 20 gram and the metal powders are taken according to their weight percentage after compression the size of the pellet formed is 20mm diameter and 25 mm height as shown in figure 2. 2.3 Mixing and Compacting Boron Powder having grain size 50 micron and 50 nm with weight percentage 3%, 6%, 9%, 12% and 15% is mixed with pure aluminum having grain size 50 micron in stirrer for 6 hours to get proper composition throughout After that these prepared samples are compact in compacting machine with load 10 tons for 20 seconds so that the green parts are formed. We used Universal testing machine to find the ultimate tensile strength of the specimen and ASTM standard was followed
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