About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Symposium
|
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
NEW TIME (was 10:45 am) Spatial Variations in Horizontal and Vertical Composition Grading using Laser Powder Bed Fusion |
Author(s) |
Cherish Lesko, Joe Walker, John Middendorf, Joy Gockel |
On-Site Speaker (Planned) |
Joy Gockel |
Abstract Scope |
Spatially varying composition can be achieved through novel laser powder bed fusion (LPBF) machine technology designed to place location specific material. The binary Titanium -Tantalum alloy system is of great interest to many fields of engineering because of the unique thermal and mechanical properties it possesses. Intentional compositional changes along with unintentional variations from the AM processing results in spatial differences impacting the material structure and the resulting properties. Machine process strategy impacts composition control and influences phase evolution. Elemental segregation occurs due to incomplete mixing in the melt pool and remelting at the interfaces. It is also established that the interfaces are structurally sound in both the vertical and horizontal grading directions, but phase transformations and microstructure differences result from thermal effects of the LPBF process when building different geometries. Through a fundamental understanding of the composition-processing-structure-properties-performance relationships, AM composition grading can be realized for many applications. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |