International Journal of Engineering Materials and Manufacture (Oct 2020)

Testing Techniques and Fatigue of Additively Manufactured Inconel 718 – A Review

  • Shyam-Sundar Balasubramanian,
  • Chris Philpott,
  • James Hyder,
  • Mike Corliss,
  • Bruce Tai,
  • Wayne NP Hung

DOI
https://doi.org/10.26776/ijemm.05.04.2020.05
Journal volume & issue
Vol. 5, no. 4

Abstract

Read online

Additive Manufacturing (AM) of metallic components shows unfavorable properties in their as-built state; surface roughness, anisotropy, residual stresses, and internal /surface defects are common issues that affect dynamic properties of AM metals. This paper reviews traditional fatigue testing techniques, summarizes published fatigue data for wrought and additively manufactured metals with focus on Inconel 718. Surface and volume defects of AM metals were presented and how post processing techniques could improve fatigue performance were shown. Different methods for normalizing fatigue data were explored due to varying results of different fatigue testing techniques.