About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Process-induced Microstructures and Defects
|
Presentation Title |
Isolating The Effects of Microstructure on the Mechanical Performance of PBF-L Ti-6Al-4V |
Author(s) |
Jake T. Benzing, Nik Hrabe, Nicholas Derimow, Newell Moser, Orion Kafka, Chad Beamer, Ryan Fishel, Chris Hadley, Mahesh Waje |
On-Site Speaker (Planned) |
Jake T. Benzing |
Abstract Scope |
Additive manufacturing of Ti-6Al-4V alloy via laser powder bed fusion (PBF-L) typically results in fine, martensitic microstructure that often requires post-post processing for residual stress relief, as well as transformation into microstructures that are desirable for mechanical performance. This work investigates the process-structure-properties (PSP) relationships via mini tensile tests of PBF-L Grade 23 (extra low interstitial oxygen) Ti-6Al-4V alloy after 14 novel high pressure heat treatments. To isolate the effects of microstructure, chemistry was kept constant such that all of the mechanical test specimens (prior to heat treatment) originated from the same build. The effects of the 15 microstructures (as-built + 14 heat treatments) on the mechanical properties were investigated in both the build and horizontal directions, resulting in 300 mini tensile tests. Mechanical behavior will be discussed through the lens of microstructural evolution, grain size/morphology, crystallography, and phase fraction. Distribution Statement A: Approved for public release; distribution is unlimited. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Titanium, Mechanical Properties |