Mechanical Engineering Commons^™

The Effect Of Friction Stir Processing On The Microstructure And Tensile Behavior Of Aluminum Alloys, Nelson Gomes Affonseca Netto

UNF Graduate Theses and Dissertations

Friction Stir Processing (FSP) is a promising thermomechanical technique that is used to modify the microstructure of metals locally, and thereby locally improve mechanical properties of the material. FSP uses a simple and inexpensive tool, and has been shown to eliminate pores and also reduce the sizes of intermetallics in aluminum alloys. This is of great interest for research on solidification, production and performance of aluminum alloy castings because FSP can enhance the structural quality of aluminum casting significantly by minimizing the effect of those structural defects.

In the literature, there is evidence that the effectiveness of FSP can change …

The Microstructural Annealing Response Of Cold Gas Dynamically Sprayed Al 6061, Clayton Andrew Cushway

UNF Graduate Theses and Dissertations

The Cold-Gas Dynamic-Spray process also known as Cold Spray (CS) has been researched for three decades. The CS process is a solid-state deposition technique via supersonic velocity of powder particles at a temperature significantly below the melting point of the spray material. This thesis presents background on the overall CS process parameters, and additional information on the microstructural and mechanical properties of typical Cold Sprayed materials.This Thesis primarily presents a study on the microstructural annealing response of CS Al 6061. It should be noted that for this study, the term “annealing” is used in the sense of the classical metallurgical …