Tensile Test Essay

EFFECT OF TiB2p PARTICULATE ADDITION IN ALUMINIUM 6061

THROUGH STIR CASTING TECHNIQUE

Rama durai K1, a, Chanakyan C2,b ,Janet A3 & Bharathikanna R4

1, 2.3 & 4 Parisutham Institute of technology and science, Thanjavur, Tamil nadu, India [e-mail], [e-mail]

Keywords: MMC, TiB2p, Tensile test, Hardness

Abstract. Metal matrix composite (MMC) focuses primarily on improved strength, hardness and tensile properties. The AMMC are widely used in Hi-TECH Engineering application as it has superior properties than any other MMC. Properties of this material depend upon the manufacturing techniques and its processing parameters, selection of matrix and reinforcements. Aluminium matrix reinforced with titanium diboride give

1kg of Aluminium was melted in a graphite crucible. For this the melt temperature was raised to 900k. Then the TiB2p (3%, 6%, 12%) weight of TiB2p were added to the Aluminium melt for production of three different composites. The TiB2 particles were preheated to 573k for to remove the moisture. Commercially pure Aluminium was melted by raising the temperature to 950k. Then it is stirred well using a mild steel stirrer.

TiB2p particle were added to the melt at the time of formation of in the melt due to stirring. The melt temperature was maintained 950k during the addition of the particles. Then the melt was casted in a graphite crucible. The particle size analysis for TiB2p and Chemical composition analysis was done for Aluminium 6061. The micro hardness measurement was carried out AL (3%, 6%, 12%) hardness testing machine with 0.5kg load and diamond ball intender. The detention time for the micro hardness measurement was 10 seconds. The tensile properties of Aluminium- TiB2p composites were evaluated using Universal Testing Msachine. The SEM was done for all the samples SEM is use to find homogeneous distribution of

they had investigate specific strength of the material improved appreciably with more addition of TiC.

Muhammad Hayat Jokhio, Muhammad Ibrahim Panwar and Mukhtiar Ali Unar[7] et al, has reported information regarding AL2O3 particles up to 10% increase in tensile strength.

Pardeep sharma, Gulshan chauhan and Neeraj Sharma[3] et al has resulted processing variables such as holding temperature , stirring speed, size of the impeller and the position of the impeller in the melt are among important factors to be considered in the production of cast metal matrix composites as these have an impact on mechanical properties.

Results and Discussion Microstructures

Samples of as cast MMCs for metallographic examination were prepared by grinding through different size of grit papers. Then the samples were etched with the etchant i.e. Keller’s reagent (2.5 ml Nitric acid, 1.5 ml HCl , 1.0 ml HF,95.0 ml Water)

TiB2