|About this Abstract
||2011 TMS Annual Meeting & Exhibition
||Aluminum Alloys: Fabrication, Characterization and Applications
||Effect of Ultrasonic Impact Treatment on a 5456 Aluminum Alloy Characterized through Micro-Specimen Testing and X-Ray Tomography
||Caroline Scheck, Kim Tran, Christopher Cheng, Marc Zupan
|On-Site Speaker (Planned)
Ultrasonic impact treat (UIT) is a surface treatment that causes uniform, but severe, plastic deformation. UIT gives excellent parameter control and has a high energy efficiency, unlike similar processes such as shot peening. The objective of this work is to show the measured hardness, strength, and void properties of an ultrasonically impacted 5456-H116 aluminum. Micro-indentation is used to map the hardness properties while microsample specimens directly measure tensile mechanical properties. The micro species (3mm in length by 1mm wide with a gage section of 250 mm square) are made at varying distances from the UIT treated surface and tested to characterize the Young's modulus and yield strength. Voids in the gage section of the micro specimens are analyzed before and after testing using a novel X-ray topography. These void characteristics are linked to the yield and plastic deformation behavior of the material.
||Planned: A print-only volume