About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
Spatially Tailoring Chemistry and Property Variations in Electron Beam Additive Manufacturing Builds through Process Control of Unicomposition Powder |
Author(s) |
Katie O'Donnell, Maria J. Quintana, Thomas K. Ales, Michael Kirka, Christopher Ledford, Siddhartha Pathak, Peter C. Collins |
On-Site Speaker (Planned) |
Peter C. Collins |
Abstract Scope |
This talk presents a radical departure from the classical means of spatially controlling composition and properties during additive manufacturing processes. For traditional control of local composition, it is common to introduce different feedstocks, whether different prealloyed powder or elemental blends. This work demonstrates a new method of controlling composition by controlling preferential vaporization of elements, in this case intentionally varying the local aluminum concentration starting with a single Ti-6Al-4V powder feedstock. By modifying the scan strategy used to melt the powder in an electron beam powder bed fusion system, local controlled composition variations of ~1.5 wt% Al and the attending elastic and plastic properties are controlled. Importantly, this control is within the x-y plane, overcoming a traditional limitation of compositional control. The result is a sample in which composition and properties (both elastic and plastic) have been spatially engineered and affected. MURI and AUSMURI Collaborative Research. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Titanium, Other |