STP1170: Investigation on the Impact Strength and Toughness of A533 Grade B Composition Weld Metal Using Small Specimens

    Varga, T
    Professor, Institute for Material Science and Material Testing and Institute for Testing and Research in Material Technology (TVFA) TU Vienna, Karlsplatz, Vienna

    Liu, QC
    Dipl.-Ing., Institute for Testing and Research in Material Technology (TVFA) TU Vienna, Karlsplatz, Vienna

    Pages: 11    Published: Jan 1993


    Abstract

    An investigation was carried out to determine the impact strength and the fracture toughness of the multipass submerged arc (SA) weld metal of A533 grade B (20MnMoNi55) composition using Charpy V-notch and precracked Charpy-type specimens. The experimental results show that there is no large difference between the micro-hardness measured in the primary and secondary zones of the SA weld metal. The Charpy V-notch impact and fracture mechanics tests yield similar results in the primary and secondary zones. Nearly all specimens investigated exhibit the phenomenon of crack jump (“pop-in” of the load), that is, sudden cleavage or quasicleavage often followed by arrest of the crack.

    Keywords:

    weld metal, fracture toughness, hardness, Charpy V-notch impact test, instrumented impact testing, fractography


    Paper ID: STP24774S

    Committee/Subcommittee: E10.02

    DOI: 10.1520/STP24774S


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