Microstructural Properties of Gamma Titanium Aluminide Manufactured by Electron Beam Melting

Sanna Fager Franzén, Joakim Karlsson, Ryan Dehoff, Ulf Ackelid, Orlando Rios, Chad Parish, William Peters

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

2 Scopus citations

Abstract

In recent years, Electron Beam Melting (EBM) has matured as a technology for additive manufacturing of dense metal parts. The parts are built by additive consolidation of thin layers of metal powder using an electron beam. With EBM, it is possible to create parts with complex geometries unable to be fabricated by other methods, examples being fine network structures and internal cavities. The process is run in vacuum, which makes it well suited for materials with a high affinity to oxygen, such as γ. titanium compounds. We present material data from a recently conducted study of the effect of EBM process melt strategy on γ-titanium aluminide, Ti-48A1- 2Cr-2Nb. The investigation includes microstructural characterization, grain size measurement and tensile testing.

Original languageEnglish
Title of host publicationSupplemental Proceedings
Subtitle of host publicationGeneral Paper Selections
PublisherJohn Wiley and Sons Inc.
Pages455-462
Number of pages8
Volume3
ISBN (Electronic)9781118062173
ISBN (Print)9781118029473
DOIs
StatePublished - May 3 2011

Keywords

  • Additive Manufacturing
  • EBM
  • Electron Beam Melting
  • Gamma Titanium Aluminide
  • Grain size
  • Metal powder
  • Microstructure
  • Tensile strength
  • Ti-48Al-2Cr-2Nb
  • γ-TiAl

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