Aspects of microstructure evolution under cascade damage conditions

B.N. Singh, S.I. Golubov, H. Trinkaus, A. Serra, Yu.N. Osetsky, A.V. Barashev

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    The conventional theoretical models describing the damage accumulation, particularly void swelling, under cascade damage conditions do not include treatments of important features such as intracascade clustering of self-interstitial atoms (SIAs) and one-dimensional glide of SIA clusters produced in the cascades. Recently, it has been suggested that the problem can be treated in terms of 'production bias' and one-dimensional glide of small SIA clusters. In the earlier treatments a 'mean size approximation' was used for the defect clusters and cavities evolving during irradiation. In the present work, we use the 'size distribution function' to determine the dose dependence of sink strengths, vacancy supersaturation and void swelling as a function of dislocation density and grain size within the framework of production bias model and glide of small SIA clusters. In this work, the role of the sessile-glissile loop transformation (due to vacancy supersaturation) on the damage accumulation behaviour is included. The calculated results on void swelling are compared with the experimental results as well as the results of the earlier calculations using the 'mean size approximation'. The calculated results agree very well with the experimental results. (C) 1997 Elsevier Science B.V.
    Original languageEnglish
    JournalJournal of Nuclear Materials
    Volume251
    Pages (from-to)107-122
    ISSN0022-3115
    DOIs
    Publication statusPublished - Nov 1997
    EventInternational Workshop on Defect Production, Accumulation and Materials Performance in an Irradiation Environment - Davos, Switzerland
    Duration: 2 Oct 19968 Oct 1996

    Workshop

    WorkshopInternational Workshop on Defect Production, Accumulation and Materials Performance in an Irradiation Environment
    CountrySwitzerland
    CityDavos
    Period02/10/199608/10/1996

    Fingerprint Dive into the research topics of 'Aspects of microstructure evolution under cascade damage conditions'. Together they form a unique fingerprint.

    Cite this