Date of Award


Document Type


Degree Name

Master of Science in Engineering (MSE)


Mechanical Engineering

Committee Chair

J. A. Schneider

Committee Member

Q. H. Ken Zuo

Committee Member

Eunseok Lee


Chromium plating, Nickel plating, Inconel, Nickel-chromium alloys


This study investigated methods to evaluate porosity in additively manufactured Inconel 718 (IN718). Various approaches to measure density were considered to determine the porosity. Specimens were evaluated before and after a heat treatment. The heat treatment included hot isostatic pressing. Metallographic analysis of the specimens provided additional information on the porosity morphology and distribution. This study addresses three issues for additive manufacturing namely: 1. How is density related to porosity? 2. What effect does the heat treatment have on pore size, count, and morphology? 3. What is the density of additive manufacturing parts before and after heat treatment?



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