About this Abstract |
Meeting |
TMS Specialty Congress 2024
|
Symposium
|
Accelerating Discovery for Mechanical Behavior of Materials 2024
|
Presentation Title |
Microstructural Investigation of Wire Arc Additively Manufactured 316LSi in the As-deposited Condition and After Forging |
Author(s) |
Brett E. Ley, Vishnu Ramasamy, Noah Kohlhorst, Glenn Daehn, Bradley Jared, Zhigang Xu, Kornel Ehmann, Jennifer L.W. Carter, John J. Lewandowski |
On-Site Speaker (Planned) |
Vishnu Ramasamy |
Abstract Scope |
Wire Arc Additive Manufacturing (WAAM) is a near net shape solution for printing large-scale metal components. A thick wall deposit of 316LSi stainless was printed using WAAM where the heat input and interpass temperature were controlled. Several tension and fatigue crack growth (FCG) samples were machined along the x and y directions and tested. The as-deposited macrostructure, microstructure, and fracture surfaces were examined using a combination of optical metallography, scanning electron microscopy, and optical profilometry. Grain structure along the entire build direction for the deposit was characterized using optical metallography. The effect of sample orientation on the WAAM structure and mechanical performance will be summarized including Young’s modulus anisotropy and orientation dependent fatigue crack growth properties. Additional characterization of the structure was performed on as-deposited material that was machined into a double cone geometry and forged. |
Proceedings Inclusion? |
Definite: Other |