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

    STP1418

    Validation of Miniature Fracture Toughness Specimens for Material Surveillance

    Published: 0


      Format Pages Price  
    PDF (232K) 15 $25   ADD TO CART
    Complete Source PDF (9.2M) 493 $152   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

    Fracture toughness testing in the elastic-plastic temperature range of material behavior is described in the Master Curve standard ASTM 1921-97. The standard allows measurement of valid fracture toughness values up to KJC= 100 MPa√m with clearly smaller than standard CVN-size specimens for the irradiated material condition. However, a relatively small amount of data measured with miniature specimens of cross-sections 5 mm × 5 mm or 3 mm × 4 mm have been published and hence the utilization of such small specimens is generally not accepted even if the universal specimen size criteria are fulfilled. In this study, the fracture toughness transition temperature T0 has been measured for a high phosphorus content WWER 440 weld coded as W502 both in the non-irradiated and in the irradiated and annealed material conditions. Three-point bend specimens of cross-sections 10 mm × 10 mm, 5 mm × 5 mm and 3 mm × 4mm were used in the study.

    Keywords:

    brittle fracture, master curve, miniature specimens, validity, testing


    Author Information:

    Valo, M
    Research scientists, and research professors, VTT Manufacturing Technology,

    Planman, T
    Research scientists, and research professors, VTT Manufacturing Technology,

    Wallin, K
    Research scientists, and research professors, VTT Manufacturing Technology,

    Rintamaa, R
    Research scientists, and research professors, VTT Manufacturing Technology,

    Ahlstrand, R
    Manager and assistant manager, FORTUM Engineering Ltd., FORTUM,

    Kohopää, J
    Manager and assistant manager, FORTUM Engineering Ltd., FORTUM,


    Committee/Subcommittee: E10.02

    DOI: 10.1520/STP10811S