Accession Number : AD0816520

Title :   FURTHER INVESTIGATIONS ON MEDIUM STRENGTH WELDABLE AL-ZN-MG.

Descriptive Note : Final technical rept. Feb 66-Jan 67,

Corporate Author : ISTITUTO SPERIMENTALE DEI METALLI LEGGERI MILAN (ITALY)

Personal Author(s) : Di Russo, Ettore

Report Date : FEB 1967

Pagination or Media Count : 73

Abstract : Further investigations have been carried out on Al-Zn-Mg alloys, having zinc and magnesium content ranging from 4 to 5% Zn and from 1 to 3% Mg. The research has been developed along the following lines: (1) evaluation of the tensile properties of extrusions and plates as a function of isothermal and two-step ageing cycles; (2) anodic stress-corrosion tests on extrusions and plates, stressed respectively on the long and on the short-transverse direction; (3) corrosion tests on unwelded and welded sheets exposed in different environments (accelerated corrosion; exposure in urban and in marine atmosphere); (4) study of the influence of the structure modifications depending on heating cycles like those occurring during welding, on the corrosion resistance of Al-4%Zn-2.7%Mg (+Cr, +Mn, +Zr) alloy sheets; (5) tensile tests at cyrogenic temperatures on notched and unnotched specimens taken from sheets. (Author)

Descriptors :   (*ALUMINUM ALLOYS, MECHANICAL PROPERTIES), ZINC ALLOYS, MAGNESIUM ALLOYS, WELDING, TENSILE PROPERTIES, AGING(MATERIALS), NOTCH SENSITIVITY, STRESS CORROSION, STRESSES, CRYOGENICS, HEAT TREATMENT, HARDNESS.

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE