|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||2022 Technical Division Student Poster Contest
||SPG-22: Microstructural Evolution during Post Processing of Additively Manufactured 7050 Aluminum Alloy and Its Effect on Corrosion Behavior
||Rupesh Rajendran, Crosby T Owens, David Spain, Preet M Singh
|On-Site Speaker (Planned)
High strength 7xxx aluminum alloys fabricated via additive manufacturing process are promising candidates for aerospace applications but there has been limited adoption of these alloys due to defects such as hot tearing and solidification cracking. Addition of nanoparticles or inoculants has been reported to promote equiaxed grain growth, mitigating such defects. This work aims to explore the microstructural evolution of additively manufactured (AM) 7050 aluminum alloy with equiaxed grains, during different stages of post-processing treatments – as built condition, partial annealing, hot isostatic pressing and solutionizing and ageing. Localized corrosion behavior of AM 7050 alloys is studied using immersion and scanning vibration electrode technique, giving insights on how different microstructural features lead to differences in local corrosion behavior. The results are compared with an equivalent wrought 7050 alloy for consideration of AM 7050 alloys as potential candidates for aerospace applications.
||Aluminum, Additive Manufacturing, Other