Hydrogen-induced internal-stress plasticity in titanium

David C. Dunand*, Peter Zwigl

*Corresponding author for this work

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

A study was conducted to demonstrate internal-stress plasticity where internal stresses were induced by a reversible change of chemical composition without a change of temperature or pressure. The titanium-hydrogen (Ti-H) system was used to demonstrate this effect, as hydrogen diffused rapidly in and out of titanium where it produced mismatch strains directly and indirectly to bcc. It was observed that the chemically induced internal-stress plasticity was fundamentally different from thermochemical processing of titanium where hydrogen alloying was used to produce a weaker, more easily workable β-Ti without considering internal stresses. Specimens were tested in a low-stress creep apparatus that was modified to allow for a gas atmosphere flowing at a rate of 1.22 L per minute that was to be changed from Ar to an Ar/4 vol pct H2 mixture.

Original languageEnglish (US)
Pages (from-to)841-843
Number of pages3
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume32
Issue number13
DOIs
StatePublished - Jan 1 2001

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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