| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
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| Symposium
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Additive Manufacturing Fatigue and Fracture IV: Toward Confident Use in Critical Applications
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| Presentation Title |
Structural Integrity of Fe- and Ni-base Alloys Processed by Additive Manufacturing – On The Impact of Microstructure |
| Author(s) |
Thomas Niendorf |
| On-Site Speaker (Planned) |
Thomas Niendorf |
| Abstract Scope |
Additive manufacturing (AM) can be used for processing of almost any metallic alloy system if apt processing parameters are available. In terms of characterization of fatigue and fracture mostly light-weight alloys such as Ti-6Al-4V have been considered so far. Steels and Ni-base alloys, however, will also be subjected to fatigue loading in many applications. In order to close the prevailing research gap much more work is needed in this specific field.
The present work focused on process-property-damage relationships in steels and Ni-base alloys processed by powder bed AM. Fatigue and fracture were studied in different regimes ranging from the low-cycle fatigue (LCF) to the crack growth regime. Generally, AM leads to the presence of unique microstructures in as-built condition. Post-treatments can be applied to change microstructural appearance. Furthermore, AM allows to establish microstructurally graded conditions. Findings presented will be used to derive microstructure design criteria for novel AM alloys.
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| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |