About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Purveyors of Processing Science and ICME: A SMD Symposium to Honor the Many Contributions of Taylan Altan, Wei Tsu Wu, Soo-Ik Oh, and Lee Semiatin
|
| Presentation Title |
Modeling Pore Closure in Titanium Alloys |
| Author(s) |
Michael D. Gram |
| On-Site Speaker (Planned) |
Michael D. Gram |
| Abstract Scope |
Porosity can form in Titanium alloys during both solidification and thermomechanical processing. Regardless of how it forms, if porosity is not closed during subsequent processing pores can serve as stress concentrators which reduce performance in service. In order to understand the requirements for pore closure, small scale rolling tests were carried out and compared to established mean field pore evolution models as well as discrete pore models using a representative volume element (RVE) approach. The mean field and RVE approaches were then applied to model full scale ingot conversion processes to predict pore size evolution using realistic macroscopic loading conditions and ultimately determine requirements for pore closure. Results show that given an assumed or measured initial pore size, aspect ratio, and orientation, modeling can be used to generate strategic forging routes capable of closing pores. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |