Anomalous Notch Rupture Behavior of Nickel-Based Superalloy Inconel 718 Due to Fabrication by Additive Manufacturing

Tensile, creep, stress rupture, and notch rupture testing at 650 °C of Inconel 718 prepared by Laser Powder-Bed Fusion showed properties similar to traditional wrought versions of the alloy except for notch rupture, where all samples failed in the notch with no elongation. The notch rupture results...

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Bibliographic Details
Published inMetallurgical and materials transactions. A, Physical metallurgy and materials science Vol. 50; no. 8; pp. 3458 - 3465
Main Authors Witkin, David B., Hayes, Robert W., McLouth, Tait D., Bean, Glenn E.
Format Journal Article
LanguageEnglish
Published New York Springer US 15.08.2019
Springer Nature B.V
Subjects
Additive manufacturing
Characterization and Evaluation of Materials
Chemistry and Materials Science
Communication
Creep (materials)
Elongation
Materials Science
Metallic Materials
Nanotechnology
Nickel
Nickel base alloys
Rupture
Solution heat treatment
Structural Materials
Superalloys
Surfaces and Interfaces
Thin Films
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Summary:Tensile, creep, stress rupture, and notch rupture testing at 650 °C of Inconel 718 prepared by Laser Powder-Bed Fusion showed properties similar to traditional wrought versions of the alloy except for notch rupture, where all samples failed in the notch with no elongation. The notch rupture results were not sensitive to solution treatment above or below the delta solvus temperature, which is also not characteristic of wrought material.
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-019-05298-7