Effect of hydrogen on Ti-10V-2Fe-3Al
The effect of hydrogen on the physical and mechanical properties of the metastable US alloy Ti-10V-2Fe-3Al was examined. This study had three main goals. The first was to improve the understanding of the effects of hydrogen in the US phase. The second goal was to determine the effects of hydrogen on the specific alloy Ti-10V-2Fe-3Al. The third goal was to identify possible in-service problems that could occur in Ti-10V-2Fe-3Al and in similar alloys. The effects of hydrogen were examined in three different microstructures: beta-annealed and water-quenched (B/WQ), beta-annealed and furnace cooled (B/FC), and solution treated and aged (STA). The B/WQ microstructure was nominally all-US with some athermal omega phase while the B/FC and STA microstructures were + US microstructures. Hydrogen concentrations from approx.0 to >30 at.% were used. Hydrogen was introduced into test specimens using either Sieverts charging or cathodic charging techniques. When the B/WQ microstructure was deformed, the US phase was transformed to orthorhombic '' martensite. Hydrogen effects in the B/FC and STA microstructures were largely the result of hydride formation at /US interfaces. The effect of hydride formation was observed as decreases in the reduction of area for tensile specimens.
- Research Organization:
- Carnegie-Mellon Univ., Pittsburgh, PA (USA)
- OSTI ID:
- 6303503
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360103 -- Metals & Alloys-- Mechanical Properties
360104 -- Metals & Alloys-- Physical Properties
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM ALLOYS
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
HYDRIDATION
HYDRIDES
HYDROGEN COMPOUNDS
IRON ALLOYS
MECHANICAL PROPERTIES
MICROSTRUCTURE
PHYSICAL PROPERTIES
TITANIUM ALLOYS
VANADIUM ALLOYS