Abstract

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.

Notes

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Graduation Date

2021

Semester

Fall

Advisor

Kapat, Jayanta

Degree

Master of Science in Mechanical Engineering (M.S.M.E.)

College

College of Engineering and Computer Science

Department

Mechanical and Aerospace Engineering

Degree Program

Mechanical Engineering; Thermo-Fluids Track

Format

application/pdf

Identifier

CFE0008889; DP0026168

Language

English

Release Date

December 2022

Length of Campus-only Access

1 year

Access Status

Masters Thesis (Campus-only Access)

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