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公开(公告)号：US3708352A
公开(公告)日：1973-01-02
申请号：US3708352D
申请日：1971-06-14
Applicant: ALUMINUM CO OF AMERICA
Inventor： SHUMAKER M , BROWN R , BROWN M
Abstract: ALUMINUM ALLOY PLATE CONTAINING 4.4 TO 10% MAGNESIUM AND STRAIN HARDENED TO IMPROVE ITS STRENGTH TO A LEVEL OF AT LEAST 40% GREATER THAN THE STRENGTH IN THE ANNEALED STATE IS IMPARTED WITH SUBSTANTIALLY FREEDOM FROM SUSCEPTIBILITY OF EXFOLIATION CORROSION. THE PROCESS INCLUDES ROLLING AT MINIMUM TEMPERATURES OF ABOUT 420* TO 650*F. DEPENDING ON THE AMOUNT OF MAGNESIUM PRESENT, TO PRODUCE THE STRAIN HARDENED PRODUCT AND COOLING AT SPECIALLY CONTROLLED RATES.
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