Investigation on the Creep Behaviour of Friction Stir Processed Al Ni Composite Material

Indentation creep experiments were carried out on friction stirred Aluminum Nickel composite. The samples were cut from Al Ni plate which was undergone by friction stir processing. The specimen was polished by different polishing methods to reveal the macro and micro structure of the material. The macro structure contains two zones base metal zone and friction stirred zone . Creep tests were carried out on both friction stirred and base metal region of test specimen at different temperatures with different loads. It was found that there was a significant difference between the creep rates of friction stirred region and that of base metal region when tested under various conditions. The Activation energy determined was found to in the range of 45KJ Mole to 55KJ Mole at lower temperatures. Based on these results it can be concluded that the operative mechanism is the dislocation creep. But at higher temperature the Activation energy was found to be in the range of 140KJ Mole to 170KJ Mole so the operative mechanism for creep is diffusion creep. Samples were metallographic ally prepared and the microstructures were studied under optical and scanning electron microscope. Results of the experiments were discussed. Marripally Ravikumar "Investigation on the Creep Behaviour of Friction Stir Processed Al-Ni Composite Material" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-1 , December 2020, URL: https://www.ijtsrd.com/papers/ijtsrd38145.pdf Paper URL : https://www.ijtsrd.com/engineering/mechanical-engineering/38145/investigation-on-the-creep-behaviour-of-friction-stir-processed-alni-composite-material/marripally-ravikumar