Mechanical Characterization and Wear Behavior of Nano TiO2 Particulates Reinforced Al7075 Alloy Composites

Document Type: Research Paper

Authors

1 Aircraft Research and Design Centre, HAL, Bangalore, India

2 Mechanical Engineering Department Siddaganga Institute of Technology Tumkur Karnataka India

3 Mechanical Engineering Basaveshwar Engineering College Bagalkot Karnataka India

4 Department of Physics Sir MVIT Bangalore

Abstract

In the current research work synthesis, characterization, mechanical and wear behavior of 5 and 10 wt. % of nano TiO2 particulates reinforced Al7075 alloy composites have been investigated. The Al7075 alloy and nano TiO2 particle composites were prepared by melt stir system. After the preparation, the prepared composites were examined by SEM, EDS and XRD for analyzing the microstructures and chemical elements. Further, mechanical and wear behavior of as cast Al7075 alloy and Al7075 -5 and 10 wt. % of nano TiO2 composites were studied. Mechanical properties like hardness, UTS, yield quality and ductility were assessed according to ASTM measures. Pin on disc contraption was utilized to lead the dry sliding wear tests. The analyses were led by differing loads and sliding speeds for a sliding distance of 3000 m. From the examination, it was discovered that the hardness, extreme strength and yield quality of composites were expanded because of nano TiO2 particles in the Al7075 amalgam grid. In nano TiO2 fortified composites the rate extension was diminished. Further, there was an expansion in the volumetric wear misfortune concerning the load, speed and sliding distance for all the readied materials. To study the fractography and different wear mechanisms for various test conditions of different compositions, tensile fractured surfaces and the worn surface morphology were analyzed by scanning electron microscope.

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