You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    Volume 46, Issue 5 (September 2018)

    Fracture-Toughness and Fatigue Crack Growth Evaluation in the Transversal Direction of the Longitudinal Weld of an API X52 Steel Pipeline

    (Received 31 January 2017; accepted 2 May 2017)

    Published Online: 2018

    CODEN: JTEVAB

      Format Pages Price  
    PDF (1.08 MB) 11 $25   ADD TO CART

    Cite this document

    X Add email address send
    X
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word



    Abstract

    In this paper, the fracture-toughness and fatigue crack growth rates of the deposited seam weld on the longitudinal pipeline API 5L X52 were evaluated. The study was performed with nonstandard curved specimens, which were machined in the transversal direction of the seam weld with a crack-initiating notch aligned perpendicular to the direction of the deposited seam weld metal. The fractographic analysis showed that the low fracture-toughness of the weld can be attributed to the the existence of elements capable of nucleating brittle fracture and the fact that the intrinsic porosity in the transversal direction provided a favorable crack path for separating the fracture plane, resulting in low fracture-toughness values. Finally, the resistance decrease with respect to the fatigue crack growth was attributed to the small grain size because of the effect of roughness-induced crack closure as well as the interaction of the crack and the inherent porosity.

    Author Information:

    Angeles-Herrera, D.
    Instituto Mexicano del Petróleo, México, D.F., C.P.

    Albiter, A.
    Instituto Mexicano del Petróleo, México, D.F., C.P.

    Cuamatzi-Meléndez, R.
    Instituto Mexicano del Petróleo, México, D.F., C.P.

    Terán, G.
    Instituto Politécnico Nacional, Departamento de Ingeniería Química Industrial, México, D.F., C.P.

    Ochoa-Ruiz, Gilberto
    Universidad Autónoma de Guadalajara, Zapopan, Jal,


    Stock #: JTE20170068

    ISSN:0090-3973

    DOI: 10.1520/JTE20170068

    Author
    Title Fracture-Toughness and Fatigue Crack Growth Evaluation in the Transversal Direction of the Longitudinal Weld of an API X52 Steel Pipeline
    Symposium ,
    Committee E08