Suppression of helium bubble growth in palladium by prior cold working

Department of Physics, Cochin University of Science and Technology, Cochin 682 022, India
Journal of Nuclear Materials (Impact Factor: 1.87). 07/1996; 231(1-2):55-62. DOI: 10.1016/0022-3115(96)00359-5


Growth of helium bubbles in palladium, having different pre-irradiation sample treatments and subsequently implanted with 50 appm of helium, has been investigated by positron lifetime spectroscopy. Presence of dislocations has been found to enhance the density of nucleated bubbles. A suppression of helium bubble growth due to the presence of dislocations is established. Bubble growth is reduced by over-pressure in dislocation-containing samples.

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Available from: Ramalingam Rajaraman, Aug 05, 2015
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    • "Various ways have been explored, e.g. thermomechanical treatment [1], cold working [2], introduction of secondary phases [3] and oxide dispersion strengthening [4]. A remarkable improvement has been achieved by the last two ways, which can be realized by doping alloying elements in metals [3] [4]. "
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