About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Materials Design and Alloy Development II
|
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 discusses an ICME framework to predict microstructure evolution through the AM build process and subsequent heat-treatments. This framework accommodates Python libraries, materials data curation system, and hierarchical models to manage data and simulate phase transformation. We adopted a finite-element, heat-transfer model to simulate the AM build process, from which we export the temperature history for Scheil-Gulliver and a martensitic transformation models to simulate micro-segregation and estimate the stability of the BCC phase. Another hierarchical model is implemented with Thermo-Calc to simulate martensite to BCC/HCP transformation in a HIPing treatment. We will exercise this framework to design a heat treatment to improve the ductility of Ti-6Al-4V. This presentation will summarize the predicted microstructure, including phase fraction and grain size, to compare to the measured values. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |