| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
A Career in Powder Processing and Additive Manufacturing: A MPMD Symposium Honoring David Bourell
|
| Presentation Title |
Failure Phenomena of Additively Manufactured Ni-Base Superalloys at Various Temperatures under Static and Cyclic Loadings |
| Author(s) |
Shuai Shao, Nima Shamsaei |
| On-Site Speaker (Planned) |
Shuai Shao |
| Abstract Scope |
This work investigated the failure phenomena and mechanical responses of several additively manufactured (AM) Ni-superalloys under both static and cyclic loading conditions over a wide temperature range – from cryogenic to elevated temperatures. The alloys include Hastelloy X, Haynes 282, Inconel 718, and Inconel 625 produced via two processes, namely laser powder bed fusion and laser powder direct energy deposition. Thorough analysis on micro-/defect- structure, mechanical characterization under static and cyclic axial loads, as well as postmortem fractography were performed. This study aimed to provide new understanding of process - structure - property relationships for these AM alloys in two regards; (1) the micro- / defect- structural evolution as the result of thermal cycles has been studied based on scanning electron microscopy and x-ray computed tomography, and (2) both fatigue and tensile properties as well as failure mechanisms were attempted to be correlated with micro-/defect- structure. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Copper / Nickel / Cobalt, Mechanical Properties |