Titaniums having excellent impact resistance and manufacturing methods
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United States of America Patent
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Apr 13, 2004
Grant Date -
Apr 3, 2003
app pub date -
Jul 31, 2001
filing date -
Mar 16, 2000
priority date (Note) -
Expired
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Abstract
Titaniums having excellent impact resistance are manufactured by methods that attain good cold workability by controlling the concentrations of oxygen, nitrogen, carbon and iron contained in ordinary pure titaniums in the desired range, applying combinations of preliminary working and annealing before or during the forming process, and controlling the Vickers hardness in the cross-sectional area to the desired range according to the concentrations, without adding aluminum, molybdenum, vanadium or other alloying elements.
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