The effect of heat treatment and HCF performance on hydrogen trapping mechanism in Timetal LCB alloy

E. Barel, G. Ben Hamu, D. Eliezer, L. Wagner

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Metastable β titanium alloys provide an advantageous balance of mechanical properties compared to other titanium alloys. Recently, a metastable low cost beta (LCB) Ti-based alloy has been developed by TIMET to be used as a high performance substitute for more classical materials in new non-aerospace technologies and has been marketed primarily for coil spring applications. However, in many of these technological applications, problems may arise when hydrogen comes in contact with titanium-based alloys. The main objective of this research is to investigate the combined influence of hydrogen and high cycle fatigue (HCF) performance on hydrogen's trapping mechanisms, microstructure and microhardness of a heat-treated Ti-6.8Mo-4.5Fe-1.5Al (Timetal LCB).Thermal desorption spectroscopy, supported by other experimental techniques such as X-ray diffraction, scanning and transmission electron microscopy, and microhardness tests, is used to determine the desorption characteristics and trapping parameters.

Original languageEnglish
Pages (from-to)77-86
Number of pages10
JournalJournal of Alloys and Compounds
Volume468
Issue number1-2
DOIs
StatePublished - 22 Jan 2009

Keywords

  • HCF
  • Thermal desorption spectroscopy (TDS)
  • Timetal LCB alloy

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