Ultrafine-grained titanium for medical implants
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United States of America Patent
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Jun 4, 2002
Grant Date -
N/A
app pub date -
Mar 28, 2000
filing date -
Mar 28, 2000
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Abstract
We disclose ultrafine-grained titanium. A coarse-grained titanium billet is subjected to multiple extrusions through a preheated equal channel angular extrusion (ECAE) die, with billet rotation between subsequent extrusions. The resulting billet is cold processed by cold rolling and/or cold extrusion, with optional annealing. The resulting ultrafine-grained titanium has greatly improved mechanical properties and is used to make medical implants.
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