Aluminum-beryllium alloys having high stiffness and low thermal expansion for memory devices
AssigneeBrush Wellman Inc.
InventorsLarry A. Grant, James M. Marder, Wayne L. Wright
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Abstract
Articles of manufacture are made of aluminum-beryllium alloys having substantially randomly distributed aluminum-rich and beryllium rich phases to provide substantially isotropic mechanical properties, such as high stiffness and low coefficients of thermal expansion, whereby the articles of manufacture provide more rapid and accurate responses.
Claims14
An article of manufacture having isotropic mechanical properties of high stiffness and low coefficient of thermal expansion made of an alloy consisting essentially of about 40% to about 95% beryllium and the balance essentially aluminum, the alloy having a microstructure of randomly distributed crystals of aluminum-rich and beryllium-rich phases.
An actuator arm for a disk drive having isotropic mechanical properties of high stiffness and low coefficient of thermal expansion made of an alloy consisting essentially of about 40% to about 95% beryllium and the balance essentially aluminum, the alloy having a microstructure of randomly distributed crystals of aluminum-rich and beryllium-rich phases.
An article of manufacture having isotropic mechanical properties of high stiffness and low coefficient of thermal expansion made of an alloy consisting essentially of about 40% to about 49% beryllium and the balance essentially aluminum, the alloy having a microstructure of randomly distributed crystals of aluminum-rich and beryllium-rich phases.
Dependencies are inferred from the claim text.