公开(公告)号：US3563814A

公开(公告)日：1971-02-16

申请号：US3563814D

申请日：1968-04-08

Applicant: ALUMINUM CO OF AMERICA

Inventor： LYLE JOHN P JR ,  TOWNER RAYMOND J ,  HAARR ALLAN P

IPC: C22C1/04 ,  C22C21/10 ,  C22F1/053 ,  C22C21/00 ,  C22F1/04

CPC classification number: C22C1/0416 ,  C22C21/10 ,  C22F1/053

Abstract: ALUMINUM BASE POWDER METALLURGY ALLOY ARTICLE HAVING AN IMPROVED COMBINATION OF HIGH TRANSVERSE YIELD STRENGTH AND STRESS CORROSION CRACKING RESISTANCE. THE ALLOY CONTAINS THE BASIC PRECIPITATION HARDENING ELEMENTS ZINC, MANGSIUM AND COPPER. IT MAY ADDITIONALLY CONTAIN COBALT OR MANGANESE. THE ALLOY IS PREPARED BY ATOMIZATION OF A MELT OF THE ELEMENTS HOT WORKING, SOLUTION HEAT TREATING, QUENCHING AND TWO-STAGE ARTIFICIAL AGING. COMPONENTS OF THE ALLOY IN PERCENT BY WEIGHT ARE, IN ADDITION TO THE ALUMINUM, 5 TO 13 ZINC, 1.75 TO 6 MANGNESIUM, 0 TO 2.5 COPPER, AND UP TO ABOUT TO COBALT OR MANGANESE. UP TO 0.75 BY WEIGHT CHROMIUM AND UP TO 0.25 BY WEIGHT ZIRCONIUM MAY BE PRESENT WHEN COBALT OR MANGANESE IS ALSO PRESENT.