Method for the production and use of semi-finished products on the basis of nickel, having a recrystallization cube texture
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United States of America Patent
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Jun 18, 2013
Grant Date -
Jan 8, 2009
app pub date -
Mar 15, 2006
filing date -
Mar 16, 2005
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Abstract
A nickel-based semi-finished product, for making a high-temperature superconductor, embodied in the form of a strip or flat wire is produced and used as a base for physical-chemical coatings provided with a high-quality intense microstructural orientation. The semi-finished product has an improved granular structure provided with a stable cube texture. A fusion or powder metallurgy process including mechanical alloys makes a semi-finished product including a technically pure Ni or Ni alloy containing an Ag additive in a specified microalloy range. The product is shaped as a strip or flat wire by hot- and cold forming processes with a thickness reduction >50% The product is softened by annealing at 500 to 850° C. and is subsequently quenched. Afterwards, the product is exposed to the 80% cold shaping. A recrystallization annealing treatment is carried out to obtain an entire cubic texture.
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