STP868

    Strain-Hardening Effects on Fracture Toughness and Ductile Crack Growth in Austenitic Stainless Steels

    Published: Jan 1985


      Format Pages Price  
    PDF Version (228K) 15 $25   ADD TO CART
    Complete Source PDF (9.3M) 15 $79   ADD TO CART


    Abstract

    The influence of cyclic and monotonic strain hardening on fracture toughness and ductile crack growth properties of 316 L stainless steel is determined using JIc and J-R curves. Cyclic strain hardening is performed by cyclic loading at different levels during precracking of specimens used for J-R tests. Monotonic strain hardening is done by controlled hot rolling of plate steel. The results obtained show that the fracture toughness is decreased by both cyclic and monotonic strain hardening. This decrease mainly affects crack initiation resistance (JIc) in the case of cyclic loading and only slightly influences crack growth resistance (dJ/da). For monotonic strain hardening, both JIc and dJ/da are strongly reduced at room and elevated temperatures. An attempt is made to determine the main factors responsible for these effects.

    Keywords:

    toughness, stainless steels, strain hardening, J-R, curves, controlled hot rolling


    Author Information:

    Balladon, P
    Research Engineer, UNIREC (Groupe USINOR) Centre de Recherches d'Unieux, Firminy Cedex,

    Heritier, J
    Research Engineer, UNIREC (Groupe USINOR) Centre de Recherches d'Unieux, Firminy Cedex,

    Jarboui, C
    Student, Ecole Nationale Superieure des Mines de Saint-Etienne, Saint-Etienne,


    Paper ID: STP34259S

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP34259S


    CrossRef ASTM International is a member of CrossRef.