R. Francis, University of Missouri - Rolla, Rolla, MO; J. W. Newkirk, U. of Missouri-Rolla, Rolla, MO; F. Liou, Missouri University of Science & Technology, Rolla, MO
Laser additive manufacturing (LAM) produces complicated near net shapes for aerospace components. Deposition produces a microstructure which is characteristic of the process and processing parameters used. Friction stir processing (FSP) offers a method of altering the microstructure after the deposition and can be integrated into the manufacturing process. The results obtained by using FSP to alter the microstructure of laser deposited Ti-6-4 will be presented. Highly refined microstructures can be achieved and the process can be employed during the build process to create microstructure independent of deposition parameters. Processing parameters have been optimized for build geometries and the use of this technique in building components will be discussed.
Summary: Laser additive manufacturing (LAM) produces complicated near net shapes for aerospace components. Deposition produces a microstructure which is characteristic of the process and processing parameters used. Friction stir processing (FSP) offers a method of altering the microstructure after the deposition and can be integrated into the manufacturing process. The results obtained by using FSP to alter the microstructure of laser deposited Ti-6-4 will be presented. Highly refined microstructures can be achieved and the process can be employed during the build process to create microstructure independent of deposition parameters. Processing parameters have been optimized for build geometries and the use of this technique in building components will be discussed.
