| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation Induced Microstructural Modification
|
| Presentation Title |
Modeling the Bonding and Structure of Non-metallic Inclusions within a Nickel Matrix during Forging |
| Author(s) |
Brandon T. Mackey, Thomas Siegmund, Michael D. Sangid |
| On-Site Speaker (Planned) |
Brandon T. Mackey |
| Abstract Scope |
Forging of metallic materials requires both high temperatures and large plastic deformation. During this process, three-dimensional defects, such as non-metallic inclusions, are known to debond from the metallic matrix and break up, resulting in a linear array of smaller inclusions, known as stringers. The presence of stringers can be detrimental to the fatigue life of the final forged component, especially when present near the free surface. By performing process modeling, we aim to provide a contribution to the understanding of deformation and failure sequences leading to the formation of stringers. A finite element model combining both solid and cohesive zone elements is solved with ABAQUS/Explicit to simulate the debonding and break up of an alumina inclusion in a nickel matrix, under isothermal forging conditions. Forging temperature, deformation per pass, and strain rate are examined to determine processing parameters correlating to the least detrimental stringer geometry in relation to fatigue loading. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Shaping and Forming, Computational Materials Science & Engineering, Other |