STP856: Elastic-Plastic Properties of Submerged Arc Weld Metal

    Van Der Sluys, WA
    Technical advisor and research metallurgists, Babcock & Wilcox, McDermott Company Research and Development Division, Alliance, OH

    Emanuelson, RH
    Technical advisor and research metallurgists, Babcock & Wilcox, McDermott Company Research and Development Division, Alliance, OH

    Futato, RJ
    Technical advisor and research metallurgists, Babcock & Wilcox, McDermott Company Research and Development Division, Alliance, OH

    Pages: 16    Published: Jan 1985


    Abstract

    The results of a study conducted over a number of years to characterize the elastic-plastic fracture properties of submerged arc weld metal are presented in this paper. The fracture properties of four different weldments were investigated at temperatures ranging from 24 to 288°C (75 to 550°F). Tests were conducted using both the conventional multiple-specimen JIc procedure as well as an automated single-specimen unloading compliance technique capable of generating the material JI-R curve.

    Test results obtained using the two different procedures are compared. The comparison indicates that while both test techniques generate comparable Ja data for a given test condition, JIc values from the respective sets of data can differ. This is attributed largely to the sparsity of data generated by the multiple-specimen technique and the nonlinearity of the JI-R curves as revealed by the single-specimen technique.

    Welding procedure was found to have a significant effect on measured toughness. A wide range of fracture behavior was observed. The welding parameters responsible for the observed behavior are discussed. The applicability of the current JIc and JI-R curve test procedures over the wide range of crack growth behavior observed is discussed.

    Keywords:

    elastic properties, plastic properties, fracture tests, fracture strength, fracture toughness, fracture properties, weldments, weld metal, submerged arc welding, impact tests, impact strength, J, tests, J, integral


    Paper ID: STP34518S

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP34518S


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