STP665: Slow Strain-Rate Stress Corrosion Testing of Aluminum Alloys

    Ugiansky, GM
    Metallurgist and physical science technician, National Measurement Laboratory, National Bureau of Standards, Washington, D.C.

    Johnson, CE
    Metallurgist and physical science technician, National Measurement Laboratory, National Bureau of Standards, Washington, D.C.

    Thompson, DS
    Director of alloy development and metallurgical engineer, Reynolds Metals Company, Richmond, Va.

    Gillespie, EH
    Director of alloy development and metallurgical engineer, Reynolds Metals Company, Richmond, Va.

    Pages: 12    Published: Jan 1979


    Abstract

    The use of the slow strain-rate stress corrosion technique for testing aluminum alloys is discussed. This technique is compared to the more frequently used statically loaded, alternate immersion test technique used for evaluating the susceptibility of aluminum alloys to stress corrosion cracking (SCC). Aluminum alloys (2124 and 7075), each in three conditions with differing susceptibilities to SCC, were tested by both the statically loaded alternate immersion test and the slow strain-rate technique. The results of these tests are compared and the slow strain-rate test is shown to be a viable, rapid technique for determining the SCC susceptibility of aluminum alloys.

    Keywords:

    air, alternate immersion test, aluminum alloys, ductility, elongation, heat treatment, sodium chloride, plate gage, reduction of area, slow strain-rate technique, strain rate, stress corrosion cracking, 2124-T851, 7075, 7075-T6, 7075-T7351, alloys


    Paper ID: STP38119S

    Committee/Subcommittee: G01.06

    DOI: 10.1520/STP38119S


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