STP1170

    Influence of Phosphorus on Thermal and Neutron Embrittlement of Pressure Vessel Steels

    Published: Jan 1993


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    Abstract

    In conjunction with an international study coordinated by the International Atomic Energy Agency (IAEA), a review was made of three Japanese model steels with different phosphorus and copper contents irradiated at 5.1019 n ∙ cm-2 (E > 1 MeV) to explain the influence of phosphorus on the thermal and neutron embrittlement of steels.

    The results obtained show an important phosphorus effect on radiation hardening and embrittlement in the low-copper steels, an appreciable embrittlement after thermal segregation of phosphorus due to a change in fracture mode from cleavage to intergranular, and a radiation hardening and embrittlement of the same order of magnitude on the segregated steel for irradiation effect.

    Keywords:

    pressure vessel steel, neutron embrittlement, temper embrittlement, phosphorus, Charpy, tensile


    Author Information:

    Soulat, PE
    Commissariat à lEnergie Atomique (CEA), Centre d'Etudes et de Recherches sur les Matériaux (CERAM)Service de Recherches Métallurgiques Appliquées (SRMA). Centre d'Etudes de Saclay, Gif-sur-Yvette,

    Miannay, D
    Institut de Protection et de Sûreté Nucléaire (ISPN)Service d'Analyse des Matériels et des Systèmes (SAMS), Centre D'Etudes Nucléaires de Fontenay, Fontenary aux Roses,

    Horowitz, H
    Institut de Protection et de Sûreté Nucléaire (ISPN)Service d'Analyse des Matériels et des Systèmes (SAMS), Centre D'Etudes Nucléaires de Fontenay, Fontenary aux Roses,


    Paper ID: STP24782S

    Committee/Subcommittee: E10.08

    DOI: 10.1520/STP24782S


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