Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1998-04-02
1999-11-30
Ip, Sikyin
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
C22C 2100, C23C 1434, C22F 104
Patent
active
059935758
ABSTRACT:
A method is provided for fabricating aluminum alloy sputtering targets having fine precipitates of a second phase material in small, randomly oriented and uniform grains. The method provided includes the steps of homogenizing the aluminum alloy billet at a temperature above the solidus temperature, deforming the billet, recrystallizing the billet at a temperature below the solidus temperature, and cryogenically deforming the billet. This minimizes second-phase precipitate size and prevents the formation of cubic structures, thereby generating fine uniform grain sizes having random orientation.
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Draper Darryl
Lo Chi-Fung
Ip Sikyin
Materials Research Corporation
Sony Corporation
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