February 15, 2024
Journal Article
Investigation of Raster Pattern Spacing and Direction for Friction Stir Additive Manufacturing of Al5083
Abstract
Friction stir additive manufacturing (FSAM) is a sheet-lamination based additive manufacturing technique. In addition to the traditional factors that govern the Friction Stir process-structure-property relationship, this relationship becomes convoluted in FSAM by the in-plane raster pattern and repeated thermal cycling from subsequent layer addition. This can lead to complex thermal gradients within the work piece and reprocessing of material. This work aims to understand the impact of raster pattern spacing and direction challenges in manufacturing the microstructure and properties of Al-5083. Control of the raster spacing can lead to an increase in hardness of up to 18% from the base material and defect free joining. These results are then directly applied to component-scale FSAM of Al-5083.Published: February 15, 2024