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Friction Stir Processing & Aging on Fatigue Properties of Different Alloy: A Review

Anjani Kumar Shukla, Pratik Vashist


The FSP process is a thermo mechanical processing techniques which is carried out by means of pin tool that will heat and mechanically deformed the material. FSP has been developed to produce UFG by applying compressive load with a suitable Tool. To enhance the mechanical properties like strength, fatigue, hardness as well as other properties like optical, electrical, magnetic the microstructure is that decides them. We refine grains by large no. of dislocations that arrange themselves to produce ultra-fine grains having high angle grain boundaries. Strength of metals and alloy increases as grain size decreases High Cycle Fatigue life increases in Ultra-fine grains. Hardness increases due to decrease in grain size. Strength decrease with decrease in heating rate. Super plastic behavior is shown at elevated Temperature. Porosity is completely removed in the process. FSP is effective process for Sheets ECAP is for cylindrical surfaces MDF are preferred for Magnesium alloys, Titanium and nickel based alloys. The microstructure decides the various properties of the metal and  its alloys. The size and phases in the microstructure decide the various mechanical properties and the properties define the performance of the component in which the following material is being used


FSP, Welded Specimen, Tool Pin Profile , Ultra-fine grains, Magnesium alloys

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