About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Titanium Technology
|
Presentation Title |
Towards an ICME Framework of Designing Post-process for Additively Manufactured Ti-6Al-4V |
Author(s) |
Shengyen Li, Kirby Matthew, James Sobotka |
On-Site Speaker (Planned) |
Shengyen Li |
Abstract Scope |
Metal additive manufacturing produces net-shape products and generally introduces local features that need additional heat treatments to tailor the microstructure to meet performance requirements. This presentation will introduce an ICME workflow to discover the processing-structure-properties relations and optimize post-building heat treatment of AM-built Ti-6Al-4V. In this workflow, we adopt a finite-element, heat-transfer model to simulate AM-building process. Scheil-Gulliver and a martensitic transformation models assist to evaluate micro-segregation and estimate the stability of the BCC phase. This workflow also accommodates a phase transformation model to predict the microstructure evolution through an AM building and subsequent heat-treatments. The predicted microstructure features are the inputs to a mechanistic model to calculate the stress-strain curves. We will exercise this workflow to design a heat treatment to improve the ductility of Ti-6Al-4V. This presentation will summarize the predicted values, including phase fraction, grain size, yield strength, and elongation, to compare to the measured values. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Titanium, ICME |