About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing, Directed Energy Deposition of Metals: Processing – Microstructure – Mechanical Property Relationships
|
| Presentation Title |
A Geometry Printability Study on the Microstructural and Mechanical Properties of DED-Manufactured 316H Stainless Steel for Nuclear Applications |
| Author(s) |
Daniel Yoon, Subhashish Meher, Nicholas Conway, Chris Hutchinson, Robert Montgomery, John Snitzer, Xiaoyuan Lou, Isabella van Rooyen |
| On-Site Speaker (Planned) |
Daniel Yoon |
| Abstract Scope |
This study explores the application of laser powder DED for fabricating components relevant to nuclear reactor applications using austenitic 316H stainless steel powders. From the rapid heating/cooling cycles, unique microstructure formation, and resulting residual stresses, all crucially impacting component performance. Small cubes and tubes were printed, followed by post-manufacturing characterization to assess material integrity and structural properties. Scanning Electron Microscopy (SEM) was employed to analyze the resultant microstructures. Two Non-Destructive Evaluation (NDE) methods, X-ray Diffraction and pulse echo ultrasonic testing, were used to analyze the residual stresses and characterize the material elastic properties, respectively. By evaluating variations in hardness, phase composition, elastic properties, and residual stress distribution across different geometry builds, this work provides essential insights into the influence of part shape and process parameters have on the final properties of DED-manufactured 316H stainless steel, informing its potential suitability and qualification pathway for demanding nuclear reactor environments. |