Metal treatment – Stock – Titanium – zirconium – or hafnium base
Patent
1991-09-18
1993-05-18
Roy, Upendra
Metal treatment
Stock
Titanium, zirconium, or hafnium base
148672, 420422, C22C 1600
Patent
active
052117740
ABSTRACT:
A stabilized alpha metal matrix provides an improved ductility, creep strength, and corrosion resistance under neutron irradiation environment in a zirconium alloy containing tin in a range of 0.8 to 1.2 percent; iron in a range of 0.2 to 0.5 percent, and typically 0.35 percent; chromium in a range of 0.1 to 0.4 percent, and typically 0.25 percent; niobium in a range of from a measurable amount up to 0.6 percent, and typically 0.30 percent; silicon in a range of 50 to 200 ppm, and typically 100 ppm; and oxygen in a range 900 to 1800 ppm, typically 1600 ppm. The silicon is added as an alloying element to reduce hydrogen absorption by the alloy and to reduce variations in the corrosion resistance with variations in the processing history of the alloy.
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Welding Handbook, pp. 472-477.
Garde Anand M.
Pati Satya R.
Combustion Engineering Inc.
Kananen Ronald P.
Roy Upendra
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