High Strength Alloy Preparation with Metal Matrix Composites for Structural Evaluation and Aerospace Applications

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
  
© 2016 by IJETT Journal
Volume-36 Number-4
Year of Publication : 2016
Authors : S Sapthagiri, Dr K Jayathirtha Rao
  10.14445/22315381/IJETT-V36P239

MLA 

S Sapthagiri, Dr K Jayathirtha Rao"High Strength Alloy Preparation with Metal Matrix Composites for Structural Evaluation and Aerospace Applications", International Journal of Engineering Trends and Technology (IJETT), V36(4),208-212 June 2016. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract
Composites are a mixture of two or more distinct components. One component is called the matrix (continuous phase) such as ceramic, metallic or polymeric, while the other distinct phase is interspersed within this matrix, lending different and improved properties to the material as a whole. The properties of the composite have to be different from those of the individual components that make up the composite. The process of making this material is by methods such as mixing; for example, when ceramic particles are well blended into a metal matrix leads to a ceramic–metal composite. In the present work the matrix composites are prepared as aluminium 6061, 6062, 2021 as constant and it is reinforced with Ni, TiB2, fly ash and husk ash. The whole process of fabrication and cast taken in stir casting methods with 600 rpm of stirrer. The composite is casted in block and the specimens prepared for microstructure analysis. Metal matrix composites produced by stir casting method have more advantages compare with other methods. Experiments were conducted by varying weight fraction of TiB2, (4%, 8% and 12%), and Ni (2%, 4%, 6%) while keeping all other parameters constant. The wear mechanism was studied through worn surface and wear analysis as well as microscopic examination of the wear tracks. This study revealed that the addition of TiB2, with Ni improves the wear resistance of aluminium composites. The results showed that increasing the mechanical properties, such as tensile strength, wear resistance and hardness caused by the percentage of TiB2, and Ni present in the samples when compared to the only addition of TiB2. The micro structural properties are observed for internal bonding ability between the atoms.

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Keywords
MMC preparation, stir cast methods, sample preparation of high strength aluminium alloys, SEM and OM analysis.