Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1992-10-30
1994-01-11
Dean, R.
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
148689, 148691, 148695, 148701, 148702, 148417, 148439, C22F 104
Patent
active
052777197
ABSTRACT:
Disclosed is a method of producing a forged and rolled Al-Zn-Cu-Mg alloy plate product having improved fatigue properties in the long transverse direction. The method comprises providing a body of an Al-Zn-Cu-Mg alloy, working said body by a forging operation to reduce its thickness in a C direction by at least 30% and rolling or working the forged body to provide a forged and rolled plate product having improved fatigue properties in the long transverse direction.
REFERENCES:
patent: 3836405 (1974-09-01), Staley et al.
patent: 3839019 (1974-10-01), Bruno et al.
J. T. Staley, "Investigation to Improve the Stress-Corrosion Resistance of Aluminum Aircraft Alloys Through Alloy Additions and Specialized Heat Treatment", Alcoa Research Laboratories Final Report, Naval Air Systems Command Contract N00019-68-C-0146, Feb. 28, 1969.
Kuhlman G. William
Magnusen Paul E.
Mehr Paul L.
Schelin John A.
Skluzak Dell F.
Aluminum Company of America
Dean R.
Koehler Robert R.
Lippert Carl R.
Topolosky Gary P.
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