6533b7d3fe1ef96bd125fe45
RESEARCH PRODUCT
Design of the friction stir welding tool using the continuum based FEM model
Gianluca BuffaGianluca BuffaRajiv ShivpuriJiang HuaLivan Fratinisubject
Heat-affected zoneMaterials scienceViscoplasticitybusiness.industryMechanical EngineeringWeldingStructural engineeringConical surfaceCondensed Matter PhysicsFatigue limitFinite element methodStatistics::Computationlaw.inventionMaterial flowMechanics of MaterialslawFriction stir weldingGeneral Materials Sciencebusinessdescription
In friction stir welding (FSW), the welding tool geometry plays a fundamental role in obtaining desirable microstructures in the weld and the heat-affected zones, and consequently improving strength and fatigue resistance of the joint. In this paper, a FSW process with varying pin geometries (cylindrical and conical) and advancing speeds is numerically modeled, and a thermo-mechanically coupled, rigid-viscoplastic, fully 3D FEM analysis able to predict the process variables as well as the material flow pattern and the grain size in the welded joints is performed. The obtained results allow finding optimal tool geometry and advancing speed for improving nugget integrity of aluminum alloys.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-03-01 | Materials Science and Engineering: A |