STP529

    Effects of Irradiation on the Tensile and Structural Properties of FV548 Stainless Steel

    Published: Jan 1973


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    Abstract

    The tensile properties of the columbium-stabilized austenitic steel FV548 have been investigated after irradiation in a thermal reactor up to fluences of 4 · 1020 n/cm2 (thermal) and in a fast reactor up to fluences of 2.7 · 1022 n/cm2 (total).

    The parameters that have been studied include the effects of irradiation temperature, covering the temperature range 550 to 750 C (1022 to 1382 F); the effects of solute level produced by increasing the solution heat-treatment temperature from 950 to 1300 C (1742 to 2372 F); and the effects of pre- and postirradiation aging. Testing has been carried out over the strain-rate range 5 · 10−4 to 5 · 10−6 per second and at temperatures between 550 and 750 C (1022 and 1382 F). The microstructures obtained during irradiation have also been investigated and the results correlated with the tensile properties. Suggested mechanisms for the effects observed are discussed.

    Keywords:

    irradiation, radiation effects, stainless steels, tension tests, carbide precipitation, electron microscopy, helium, bubbles, fast neutrons


    Author Information:

    Watkin, JS
    Higher scientific officer and section leader, United Kingdom Atomic Energy Authority, The Reactor Group, Reactor Fuel Element Labs., Preston, England

    Shepherd, JP
    Lecturer, Southall Technical College, London,

    Standring, J
    Higher scientific officer and section leader, United Kingdom Atomic Energy Authority, The Reactor Group, Reactor Fuel Element Labs., Preston, England


    Paper ID: STP35472S

    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP35472S


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