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

    If you are an ASTM Compass Subscriber and this document is part of your subscription, you can access it for free at ASTM Compass

    Effect of Dynamic Strain Aging on Fracture Resistance of Carbon Steels Operating at Light-Water Reactor Temperatures

    Published: 01 January 1990

      Format Pages Price  
    PDF (400K) 22 $25   ADD TO CART
    Complete Source PDF (13M) 611 $132   ADD TO CART

    Cite this document

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


    This paper reviews the phenomenon of dynamic strain aging in carbon steels and considers its effects on the fracture behavior of carbon-steel pipes and pressure vessels in lightwater reactors operating at elevated temperatures near 290°C (550°F).

    Dynamic strain aging is a phenomenon in which aging occurs simultaneously with plastic straining. It occurs over a range of temperatures that depends on strain rate. In tensile tests, it is manifested by increased tensile strength, increased strain-hardening rate, serrated stress-strain curves, and decreased ductility.

    Evidence is presented to show that the occurrence of dynamic strain aging can significantly lower the fracture resistance of carbon steels. This lowering of fracture resistance may be manifested in several ways: (1) JIc is lower at light-water reactor (LWR) temperatures than at room temperature, (2) the tearing modulus is lower at LWR temperatures than at room temperature, and (3) stable ductile crack growth may be interrupted by unstable ductile fracture at LWR temperatures but not at room temperature.

    The paper examines probable causes of dynamic strain aging and describes methods for identifying which steels are susceptible to it.


    dynamic strain aging, embrittlement, fracture toughness, J-R, curves, unstable crack growth, pressure vessel steels, pipe steels, carbon steels, serrated stress-strain curves

    Author Information:

    Marschall, CW
    Battelle, Columbus, OH

    Landow, MP
    Battelle, Columbus, OH

    Wilkowski, GM
    Battelle, Columbus, OH

    Committee/Subcommittee: E08.04

    DOI: 10.1520/STP19003S