SINTERING BEHAVIOUR OF 3D PRINTED 17-4PH STAINLESS STEEL

Nandhini Raju, Peter Warren, Ramesh Subramanian, Ranajay Ghosh, Erik Fernandez, Seetha Raghavan, Jayanta Kapat

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The main aim of the research work is to investigate the sintering behavior and its impact on the material properties of 3D printed 17-4PH stainless steel. The samples were manufactured by the Atomic Diffusion Additive Manufacturing technique, the Metal X system. Cooling holes were printed with the sample in different build orientations giving an overview of the printability and accuracy of the atomic diffusion additive manufacturing (ADAM) technique. Samples were processed by washing, thermal de-binding, and sintering to produce a final solid metal part. Pre-sintered parts, after washing, were tested for chemical composition, roughness, particle size analysis, density, Energy Dispersive X-ray spectroscopy, and microstructure analysis using Scanning electron microscopy (SEM) to understand the material properties. Post-sintered samples were tested for the same tests to understand the sintering impact. A unique conceptual approach and statistical analysis are included in this research. To understand the thermal debinding and sintering kinetics Differential Scanning Calorimetry (DSC) and Dilatometry (DIL) tests were performed. DSC results gave details about the thermal de-binding and binder information. Dilatometry (DIL) results showed shrinkage over the temperature profile, and significant changes in shrinkages were found above 1250 ?. The results gave an overview of the sintering kinetics and sintering impact of 3D printed 17-4PH stainless steel. This helps decide the optimized thermal debinding and sintering profile to achieve high dense material. It should be noted that this is the first-ever study investigating in detail thermal de-binding and sintering kinetics and its impact on the material properties according to the ADAM technique.

Original languageEnglish
Title of host publicationIndustrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil and Gas Applications
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791886052
DOIs
StatePublished - 2022
Externally publishedYes
EventASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition, GT 2022 - Rotterdam, Netherlands
Duration: Jun 13 2022Jun 17 2022

Publication series

NameProceedings of the ASME Turbo Expo
Volume7

Conference

ConferenceASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition, GT 2022
Country/TerritoryNetherlands
CityRotterdam
Period06/13/2206/17/22

Funding

The authors would like to acknowledge the funding support through Siemens Energy doctoral fellowship for this research. The authors would like to acknowledge different centers such as Siemens Energy Innovation center, Orlando for manufacturing, AMPAC(Advanced Materials Processing and Analysis Center), CREOL(The College of Optics and Photonics), UCF for experimental facility help, Siemens Energy Casselberry for experiments and data collection, Linseis lab, New Jersey for experiments related to sintering kinetics. The authors appreciate and acknowledge help from Dr. Forrest Ruhge, Mr. Ranier Valentin, Siemens innovation center, and Mr. Alex from Linseis, New Jersey for their technical support.

Keywords

  • 17-4PH stainless steel
  • Additive manufacturing
  • Atomic Diffusion Additive Manufacturing (ADAM)
  • Material properties
  • Metal additive manufacturing
  • Shrinkage
  • Sintering
  • Sintering impact
  • Sintering Kinetics
  • thermal de-binding

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