Browsing by Author "Kelly, PM"

Now showing 1 - 9 of 9
  • Thumbnail Image
    Item
    Calibration of a JSEM-200 electron microscope
    (Australian Atomic Energy Commission, 1975-10) Blake, RG; Jostsons, A; Kelly, PM
    The results of a detailed calibration of a JSEM-200 scanning transmission electron microscope are reported. Two types of measurements have been made: (a) calibration of the various parameters associated with scanning transmission (STEM) imaging, and (b) calibration of the usual parameters required for analytical diffraction contrast experiments in the conventional transmission mode (CTEM). The report also contains a detailed discussion of the various STEM imaging modes and the microscope settings necessary to obtain the required image.
  • Thumbnail Image
    Item
    Colour film techniques for hot-cell radiography
    (Australian Atomic Energy Commission, 1971-08) Arthur, J; Blake, RG; Kelly, PM
    The report describes the processing and exposure conditions required to produce good colour radiographs of dummy fuel pins. Using a travelling microscope, cladding tube diameters, fuel pellet diameters and tube/pellet gaps were measured on colour radiographs to an accuracy of better than + 0.002 inches. The minimum detectable tube/pellet gap was 0.003 inches. In all cases the colour radiographs proved to be as good as or better than black and white radiographs of the same object. The se a microdensitometer to measure colour radiographs, it was necessary to print the radiographs on black and white film. A suitable black and white emulsion for this process was established and the results obtained compare favourably with those taken from black and white radiographs. Colour film is more tolerant to gamma radiation than an equivalent black and white x-ray film.
  • No Thumbnail Available
    Item
    The effect of axial flaws on the burst pressure of stainless steel tubing
    (International Institute of Welding, 1976-08-23) Kelly, PM; Brown, KR; Smith, PD; Zybenko, B
    A study has been made of the failure of 321 stainless steel tubes containing artificial axial defects. The data agree well with mathematical analyses that are available in the literature to predict the effect of defects on the failure stress of pressurised tubes fabricated from tough materials. Satisfactory agreement was obtained although the experimental pressurisations were performed without an axial stress component, whereas the analyses are normally used for structures in which an axial stress is developed.
  • Thumbnail Image
    Item
    An electron microscopy study of the solution treatment of MAR 350 and MAR 400 maraging steels
    (Australian Atomic Energy Commission, 1980-12) Warren, RB; Pollock, JTA; Kelly, PM
    A study of the effect of solution treatment on the microstructure of types MAR 350 and MAR 400 maraging steels has been carried out using transmission electron microscopy (TEM). The aim of the study was to determine the heat treatments needed to produce fine-grained, single-phase microstructures which, after ageing at 500°C were likely to have acceptable combinations of strength, toughness and ductility. The main results are a series of fold out montages which present a detailed description of the microstructure.
  • Thumbnail Image
    Item
    The failure of circumferentially flawed stainless steel tubes under bending stresses
    (Australian Atomic Energy Commission, 1979-11) Kelly, PM; Zybenko, B
    The failure of circumferentially flawed, 100mm diameter type 321 stainless steel tubes under bending stresses was examined experimentally. Both through-wall and partial thickness flaws were tested. The results were in good agreement with the predictions of a net section plastic collapse model.
  • Thumbnail Image
    Item
    An inclined specimen cartridge for use in the JEM-7A goniometer stage
    (Australian Atomic Energy Commission, 1971-12) Blake, RG; Kelly, PM; Warren, RB
    The inclined specimen cartridge is designed to hold 3 mm discs at a predetermined angle to the beam. The cartridge fits a standard double tilt goniometer stage, no modifications of the microscope are required and the full tilt range of the goniometer stage is still available. Loading and operational instructions are outlined with the aid of a sectional diagram.
  • Thumbnail Image
    Item
    Progress report for Materials Division, 1 July 1981 - 30 June 1982
    (Australian Atomic Energy Commission, 1982-06) Kelly, PM
    During this period, there was a major reorganisation of the AAEC. Research projects on acoustic emission and hydrogen production and storage were transferred to CSIRO, and research on the laser enrichment of isotopes was taken over by the Division. The Division's research program has centred on SYNROC research and development, high strength steels, fusion reactor materials, and non-destructive testing. In addition, the Division has again provided a number of services to industry and other outside organisations and to other parts of the AAEC. During the year, Mr Mohd bin Harun, Mr Abdul Aziz Mohamed and Mr Pauzi Ismail from the Tun Ismail Atomic Research Centre (Puspati, Malaysis) were attached to the Division for training and practical experience.
  • No Thumbnail Available
    Item
    Radiation damage in zirconium
    (International Institute of Welding, 1976-08-23) Jostsons, A; Blake, RG; Kelly, PM
    A transmission electron microscopy study if the defect structure in neutron irradiated zirconium has shown the existence of mixed vacancy/interstitial dislocation loop populations with a/3 <1120> Burgers vectors. The absence of c component dislocation loops indicates clearly that the Buckley model for irradiation growth in neutron irradiated zirconium is invalid.
  • Thumbnail Image
    Item
    Transmission electron microscope procedures for characterising dislocation loops in neutron-irradiated zirconium and its alloys
    (Australian Atomic Energy Commission, 1976-04) Blake, RG; Jostsons, A; Kelly, PM
    Complete characterisation of the dislocation loops in irradiated zirconium and its alloys present particular problems; these include unfavourable texture, the presence of thin foil artefacts; the non-edge character of the loops and their elliptical shape. The procedures adopted to deal with these problems are described and a number of precautionary measures are listed. After considering the possible confusion between thin foil artefacts and small defect clusters, the report outlines the characterisation procedure in the order; Burgers vector identification; loop geometry; loop nature; and quantitative measurements. A detailed analysis of the possible errors associated with loop ellipticity is given in Appendix A.