Accession Number:

AD0405680

Title:

RESEARCH ON THE BASIC NATURE OF STRESS CORROSION FOR VARIOUS STRUCTURAL ALLOYS AT ROOM AND ELEVATED TEMPERATURES

Descriptive Note:

Technical documentary rept. 15 Dec 1961-16 Feb 1963

Corporate Author:

ARMOUR RESEARCH FOUNDATION CHICAGO IL

Personal Author(s):

Report Date:

1963-02-01

Pagination or Media Count:

60.0

Abstract:

Program objectives were 1 to study the effect of microstructure on susceptibility to stress corrosion cracking in the short-transverse direction of 7075-T6 aluminum alloy and 2 to study the kinetics of stress-corrosion cracking at elevated temperature of candidate materials for structural applications in the trisonic transport in the presence of sea salt. It was hypothesized that the poor resistance to stress corrosion of high-strength, wrought aluminum alloys was due to the layered-type microstructure characteristic of these materials. Short life was associated with the layered-type of grain structure characteristic of commercial material, and long life was associated with irregular or equiaxed grain structures. The experimental results gave good support to the hypothesis.

Subject Categories:

  • Properties of Metals and Alloys
  • Construction Equipment, Materials and Supplies

Distribution Statement:

APPROVED FOR PUBLIC RELEASE