Accession Number : AD0434214

Title :   MINOR ALLOY ADDITIONS TO ALUMINUM ALLOY MELTS,

Corporate Author : ROCK ISLAND ARSENAL ILL

Personal Author(s) : Miclot,R. B.

Report Date : 26 NOV 1963

Pagination or Media Count : 19

Abstract : Results of tensile tests on beryllium and sodium treated aluminum alloys, with high iron impurity, are presented. The yield strength of 195-T6 alloy, 0.64% iron, is increased 30% by a 0.02% beryllium addition. Cast-to-size tensile bars from degassed and beryllium treated melts exhibit approximately 29,000 psi. yield strength, 43,000 psi. tensile strength,a nd 4% elongation. A small quantity of beryllium, (0.05% addition), slightly improves the tensile strength and elongation of 356-T6 alloy, 0.65% iron, but does not appreciably effect the yield strength. Gradual decline in yield strength and rise in elongation is observed with increase in beryllium additions to 40E alloy, 0.58% iron, in heat-treated conditions. Mechanical properties of aluminum-silicon alloys356 and A356 - were not improved by sodium treatment preceded by beryllium additions to degassed melts. (Author)

Descriptors :   (*ALUMINUM ALLOYS, ADDITIVES), (*IMPURITIES, ALUMINUM ALLOYS), (*CASTINGS, ALUMINUM ALLOYS), BERYLLIUM, SODIUM, MELTING, HEAT TREATMENT, MECHANICAL PROPERTIES, ELASTIC PROPERTIES, TENSILE PROPERTIES, RODS, TABLES(DATA), CASTING ALLOYS

Distribution Statement : APPROVED FOR PUBLIC RELEASE