Hydrogen in titanium alloys

Technical Report · Wed Apr 01 00:00:00 EST 1981

DOI:https://doi.org/10.2172/6420120· OSTI ID:6420120

Wille, G W; Davis, J W

The titanium alloys that offer properties worthy of consideration for fusion reactors are Ti-6Al-4V, Ti-6Al-2Sn-4Zr-2Mo-Si (Ti-6242S) and Ti-5Al-6Sn-2Zr-1Mo-Si (Ti-5621S). The Ti-6242S and Ti-5621S are being considered because of their high creep resistance at elevated temperatures of 500/sup 0/C. Also, irradiation tests on these alloys have shown irradiation creep properties comparable to 20% cold worked 316 stainless steel. These alloys would be susceptible to slow strain rate embrittlement if sufficient hydrogen concentrations are obtained. Concentrations greater than 250 to 500 wppm hydrogen and temperatures lower than 100 to 150/sup 0/C are approximate threshold conditions for detrimental effects on tensile properties. Indications are that at the elevated temperature - low hydrogen pressure conditions of the reactors, there would be negligible hydrogen embrittlement.

• Research Organization: McDonnell Douglas Astronautics Co., St. Louis, MO (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: AS02-77ET52039
• OSTI ID: 6420120
• Report Number(s): DOE/ET/52039-2; TRN: 81-009281
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
STAINLESS STEELS
EMBRITTLEMENT
MECHANICAL PROPERTIES
PERMEABILITY
TITANIUM BASE ALLOYS
ABSORPTION
DIFFUSION
HYDROGEN
SOLUBILITY
ALLOYS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
ELEMENTS
IRON ALLOYS
IRON BASE ALLOYS
NONMETALS
STEELS
TITANIUM ALLOYS
360103* - Metals & Alloys- Mechanical Properties