About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
|
Tackling Metallic Structural Materials Challenges for Advanced Nuclear Reactors
|
Presentation Title |
What “Qualifies” as Nuclear-Grade Laser Powder Bed Fusion 316H Stainless Steel? |
Author(s) |
Caleb Massey, Peeyush Nandwana, Holden Hyer, Amir Ziabari, Xuan Zhang, Mark Messner |
On-Site Speaker (Planned) |
Caleb Massey |
Abstract Scope |
One of the primary goals of the Advanced Materials and Manufacturing Technologies (AMMT) program is the establishment of a comprehensive framework for rapid qualification of new structural materials, with a specific focus on additively manufactured 316H SS to be deployed in advanced reactors operating at elevated operating temperatures. This framework relies on a combination of high-throughput optimization of 316H printing parameter envelopes, the down-selection of compositional specifications and post-processing conditions, and the combined use of in-situ build data & modeling/simulation as a combined quality assurance/property validation tool. This work summarizes the optimization of process parameters for laser powder bed fusion (LPBF) 316H SS at Oak Ridge National Laboratory through the use of high-throughput x-ray computed tomography (XCT), targeted electron microscopy, and subsized mechanical testing. Finally, the applicability of the miniature printed specimen geometry to prototypic structures and/or scaled parts is discussed for the collection of relevant code-case data. |