Preparation and Certification of Hydrogen in Titanium Alloy Standard Reference Materials

Published

August 4, 2012

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

Volume

43A

Issue

12

Pub Type

Journals

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Keywords

titanium alloys, hydrogen, standard reference materials, activation analysis, neutrons, prompt gamma rays

Citation

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)