Hydrogen trapping in 3D-printed (additive manufactured) Ti-6Al-4V

Ravit Silverstein, Dan Eliezer

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Hydrogen trapping state and desorption behavior in 3D printed-Ti-6Al-4V, designed using additive manufacturing (AM), have been investigated. The AM process in this work is selective laser melting (SLM) by which components are built using melting powder's layers with a laser beam. During this process, hydrogen can meet with Ti, leading to a catastrophically failure known as hydrogen embrittlement. The effect of hydrogen on different textural anisotropy of AM-Ti-6Al-4V, and on metal's defect (created during the SLM process), have been studied in relation with hydrogen trapping state, and hydrogen embrittlement. The common effect of hydrogen on phase transformation in AM-Ti-6Al-4V has been shown. It is shown that the susceptibility to hydrogen embrittlement significantly depends on the printing direction. The impact of hydrogen desorption on AM-Ti-6Al-4V have been demonstrated with thermal desorption spectrometry (TDS), X-ray diffraction (XRD) and microstructural observations.

Original languageEnglish
Pages (from-to)297-304
Number of pages8
JournalMaterials Characterization
Volume144
DOIs
StatePublished - 1 Oct 2018

Keywords

  • Additive manufacturing (AM)
  • Hydrogen
  • Hydrogen trapping
  • Thermal desorption spectrometry (TDS)
  • Ti-6Al-4V powder

ASJC Scopus subject areas

  • Materials Science (all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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