Title
Evaluation of porosity in additively manufactured inconel 718 through density and metallography
Date of Award
2016
Document Type
Thesis
Degree Name
Master of Science in Engineering (MSE)
Department
Mechanical Engineering
Committee Chair
J. A. Schneider
Committee Member
Q. H. Ken Zuo
Committee Member
Eunseok Lee
Subject(s)
Chromium plating., Nickel plating., Inconel., Nickel-chromium alloys.
Abstract
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?
Recommended Citation
Cordner, Samuel, "Evaluation of porosity in additively manufactured inconel 718 through density and metallography" (2016). Theses. 192.
https://louis.uah.edu/uah-theses/192