Texture and Microstructure Analysis of IN718 Nickel Superalloy Samples Additively Manufactured by Selective Laser Melting

Benjamin De Jager, Baicheng Zhang, Xu Song, Chryssanthi Papadaki, Hongjia Zhang, León RomanoBrandt, Enrico Salvati, Tan Sui, Alexander M. Korsunsky

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

Selective Laser Melting (SLM) is an additive manufacturing technique in which thin layers of fine powder are fused by selective melting with a high-powered laser to create a 3D product from a computer file. The high cooling rate of the melt pool formed by the high-powered laser gives rise to material microstructures that differ from standard wrought or cast material. Electron Backscattered Diffraction (EBSD) was performed on five IN718 samples with the long axis inclined with respect to the base plane by the different angles of 0°, 30°, 45°, 60°, and 90°, respectively. On the basis of the data collected, using the Orientation Distribution Function (ODF) and anisotropic elastic constants for the alloy, Young’s modulus estimates for the five samples were obtained. Young’s modulus appears to attain the highest value for the build orientation close to 45°. Fourier coefficients of each sample’s ODF were analysed. It was found that the samples could be clearly distinguished by considering the fourth-order term.

Original languageEnglish
Title of host publicationProceedings of the International MultiConference of Engineers and Computer Scientists 2017, IMECS 2017
EditorsOscar Castillo, S. I. Ao, Craig Douglas, David Dagan Feng, A. M. Korsunsky
PublisherNewswood Limited
Pages734-740
Number of pages7
ISBN (Electronic)9789881404770
Publication statusPublished - 2017
Externally publishedYes
Event2017 International MultiConference of Engineers and Computer Scientists, IMECS 2017 - Hong Kong, Hong Kong
Duration: 15 Mar 201717 Mar 2017

Publication series

NameLecture Notes in Engineering and Computer Science
Volume2228
ISSN (Print)2078-0958

Conference

Conference2017 International MultiConference of Engineers and Computer Scientists, IMECS 2017
Country/TerritoryHong Kong
CityHong Kong
Period15/03/1717/03/17

Keywords

  • EBSD
  • Microstructure
  • Ni Superalloys
  • Selective Laser Melting

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