Metal treatment – Process of modifying or maintaining internal physical... – Chemical-heat removing or burning of metal
Patent
1988-09-12
1990-05-08
Rutledge, L. Dewayne
Metal treatment
Process of modifying or maintaining internal physical...
Chemical-heat removing or burning of metal
148 3, 419 29, C22F 104, C22C 109, C22C 2100
Patent
active
049235320
ABSTRACT:
An aluminum based metal matrix composite is produced from a charge containing a rapidly solidified aluminum alloy and particles of a reinforcing material present in an amount ranging from about 0.1 to 50 percent by volume of the charge. The charge is ball milled energetically to enfold metal matrix material around each of the particles while maintaining the charge in a pulverant state. Upon completion of the ball milling step, the charge is consolidated to provide a powder compact having a formable, substantially void free mass. The mass is then subject to a heat treatment during which it is solutionized at a temperature above the solvus temperature of the alloy, quenched and age hardened at a temperature below the solvus temperature of the alloy to promote precipitation of a primary strengthening Al.sub.3 (Li,Zr) phase and to precipitate substantially all of the Al.sub.3 (Li,Zr) phase into the metal matrix. The composite is especially suited for use in aerospace, automotive, electronic, wear resistance critical components and the like.
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Gilman Paul S.
Zedalis Michael S.
Allied-Signal Inc.
Buff Ernest D.
Fuchs Gerhard H,.
Rutledge L. Dewayne
Schumaker David W.
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