Hydrogen-assisted degradation of titanium based alloys

Ervin Tal-Gutelmacher, Dan Eliezer

Research output: Contribution to journalArticlepeer-review

94 Scopus citations

Abstract

Titanium base alloys are among the most important advanced materials for a wide variety of aerospace, marine, industrial and commercial applications, due to their high strength/weight ratio and good corrosion behavior. Although titanium is generally considered to be reasonably resistant to chemical attack, severe problems can arise when titanium base alloys come in contact with hydrogen containing environments. Titanium base alloys can pick up large amounts of hydrogen when exposed to these environments, especially at elevated temperatures. If the hydrogen remains in the titanium lattice, it may lead to severe degradation of the mechanical and fracture behavior of these alloys upon cooling. As a consequence of the different behavior of hydrogen in α and β phases of titanium (different solubility, different diffusion kinetics, etc), the susceptibility of each of these phases to the various forms of and conditions of hydrogen degradation can vary markedly. This paper presents an overview of hydrogen interactions with titanium alloys, with specific emphasis on the role of microstructure on hydrogen-assisted degradation in these alloys.

Original languageEnglish
Pages (from-to)1594-1600
Number of pages7
JournalMaterials Transactions
Volume45
Issue number5
DOIs
StatePublished - 1 May 2004

Keywords

  • Hydrogen absorption
  • Hydrogen embrittlement
  • Titanium alloys
  • Titanium hydrides

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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