Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Schneider, A. Judith
Committee Member
Nunes Jr, C. Arthur
Committee Member
Gilbert, Jerome
Date of Degree
8-8-2009
Document Type
Graduate Thesis - Open Access
Major
Mechanical Engineering
Degree Name
Master of Science
College
James Worth Bagley College of Engineering
Department
Department of Mechanical Engineering
Abstract
Friction stir welding (FSWing) is a solid state, thermo-mechanical process that utilizes a non-consumable rotating weld tool to consolidate a weld joint. In the FSW process, the weld tool is responsible for generating both the heat required to soften the material and the forces necessary to deform and consolidate the former weld seam. Thus, weld tool geometry, material selection, and process parameters are important to the quality of the weld. To study the effects of the weld tool geometry on the resulting welds, a previous study was conducted using varying degree taper, microwave-sintered tungsten carbide (WC) weld tools to FSW Ti-6Al-4V. Fully consolidated welds were down selected for this study to evaluate the resulting mechanical properties and to document the microstructure. X-ray diffraction (XRD) was used to compare the parent material texture with that in the weld nugget. The purpose of this study is to quantify the temperatures obtained during FSWing by interpreting the resulting microstructure. This information is useful in process optimization as well as weld tool material selection.
URI
https://hdl.handle.net/11668/15476
Recommended Citation
Rubisoff, Haley Amanda, "Microstructural characterization of friction stir welded Ti-6Al-4V" (2009). Theses and Dissertations. 3094.
https://scholarsjunction.msstate.edu/td/3094
Comments
friction stir welding (FSW)||Ti-6Al-4V||tapered weld tool