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Preparation and Certification of Hydrogen in Titanium Alloy Standard Reference Materials
Published
Author(s)
Rick L. Paul, Richard M. Lindstrom
Abstract
A series of three Hydrogen in Titanium Alloy Standard Reference Materials (SRMs 2452, 2453, and 2454) were prepared with hydrogen mass fractions bracketing the hydrogen specification limit of 125 mg/kg. Commercial titanium alloy Ti6Al4V (6 % aluminum, 4 % vanadium) was heated under vacuum in a furnace to remove native hydrogen, then doped with a measured quantity of hydrogen. Prompt gamma-ray activation analysis was used to determine hydrogen in the degassed material and finished SRMs. A combination of preparation data and PGAA measurement was used to certify the hydrogen mass fraction of each. The certified hydrogen mass fractions are 62.5 mg/kg ± 1.6 mg/kg for SRM 2452, 114 mg/kg ± 5 mg/kg for SRM 2453, and 211 mg/kg ± 4 mg/kg for SRM 2454.
Citation
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Paul, R.
and Lindstrom, R.
(2012),
Preparation and Certification of Hydrogen in Titanium Alloy Standard Reference Materials, Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=909478
(Accessed June 8, 2023)