The objective of this study is to investigate the material properties of 17-4PH stainless steel printed with cooling holes in different build orientations by the Atomic Diffusion Additive manufacturing technique. Samples with film cooling holes printed in different build orientations, with impingement inserts, impingement cavities were manufactured in a Markforged Metal-X machine. The presence of the holes in these samples helps to understand the printability and accuracy of internal cooling holes, as manufactured by the Metal-X machine. Manufactured samples were first washed to remove the plastic binder. These pre-sintered samples were tested, for density, microstructure analysis, roughness, Energy Dispersive X-ray Spectroscopy (EDS), and X-ray Fluorescence Spectrometer (XRF) to understand the material properties. These tests were performed post-sintering to understand the post thermal treatment response. Also, CT (Computerized Tomography) scan was performed to understand the dimensional changes, deviations, inclusion on the printed parts. The printed holes, their anomalies, and selection of standards of testing will be discussed along with the material behavior of 17-4PH stainless steel. Finally, a comparison with 316L fabricated by binder jetting printing is done to understand the differences between binder jetting printing and atomic diffusion additive manufacturing techniques.
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Master of Science in Mechanical Engineering (M.S.M.E.)
College of Engineering and Computer Science
Mechanical and Aerospace Engineering
Mechanical Engineering; Thermo-Fluids Track
Length of Campus-only Access
Masters Thesis (Campus-only Access)
Raju, Nandhini, "Material Properties of 17-4PH Stainless Steel Fabricated With Cooling Holes by Atomic Diffusion Additive Manufacturing (ADAM)" (2021). Electronic Theses and Dissertations, 2020-. 918.