| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture: Towards Rapid Qualification
|
| Presentation Title |
Tailoring Materials by Additive Manufacturing - From Process Parameters to Superior Fatigue Properties |
| Author(s) |
Thomas Niendorf |
| On-Site Speaker (Planned) |
Thomas Niendorf |
| Abstract Scope |
Additive manufacturing (AM) does not only allow to realize components of unprecedented geometrical complexity, but also enables to establish unique microstructures. Keys toward direct microstructure design are control of solidification conditions as well as the entire thermal history of the part in focus. Based on appropriate process parameters, even locally tailored microstructures can be realized. For a couple of alloys processed by different AM processes, i.e., electron beam- and laser-based powder bed fusion, fatigue performances are assessed. Focus is on iron- and nickel-based alloys. It is revealed that in austenitic steels superior damage tolerance and fatigue properties result from twinning and martensitic transformation (TWIP and TRIP). In microstructurally graded conditions even crack arrest can be achieved. Based on the local design of chemical composition during processing, several of such effects can be imprinted and exploited in a single structure. Prospects and challenges of AM tailored designs will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |