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New Nanoindentation Study Findings Recently Were Reported by A. Rico and Co-Researchers (Nanoindentation measurements of the mechanical properties of...

August 29, 2014



New Nanoindentation Study Findings Recently Were Reported by A. Rico and Co-Researchers (Nanoindentation measurements of the mechanical properties of zirconium matrix and hydrides in unirradiated pre-hydrided nuclear fuel cladding)

By a News Reporter-Staff News Editor at Science Letter -- A new study on Nanoindentation is now available. According to news reporting originating in Madrid, Spain, by NewsRx journalists, research stated, "It is well known that the mechanical properties of the nuclear fuel cladding may be affected by the presence of hydrides. The average mechanical properties of hydrided cladding have been extensively investigated from a macroscopic point of view."

The news reporters obtained a quote from the research, "In addition, the mechanical and fracture properties of bulk hydride samples fabricated from zirconium plates have also been reported. In this paper, Young's modulus, hardness and yield stress are measured for each phase, namely zirconium hydrides and matrix, of pre-hydrided nuclear fuel cladding. To this end, nanoindentation tests were performed on ZIRLO samples in as-received state, on a hydride blister and in samples with 150 and 1200 ppm of hydrogen homogeneously distributed along the hoop direction of the cladding. The results show that the measured mechanical properties of the zirconium hydrides and ZIRLO matrix (Young's modulus, hardness and yield stress) are rather similar. From the experimental data, the hydride volume fraction in the cladding samples with 150 and 1200 ppm was estimated and the average mechanical properties were calculated by means of the rule of mixtures. These values were compared with those obtained from ring compression tests."

According to the news reporters, the research concluded: "Good agreement between the results obtained by both methods was found."

For more information on this research see: Nanoindentation measurements of the mechanical properties of zirconium matrix and hydrides in unirradiated pre-hydrided nuclear fuel cladding. Journal of Nuclear Materials, 2014;452(1-3):69-76. Journal of Nuclear Materials can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Nuclear Materials - www.elsevier.com/wps/product/cws_home/505671)

Our news correspondents report that additional information may be obtained by contacting A. Rico, Adv Mat Simulat SL, Madrid, Spain. Additional authors for this research include M.A. Martin-Rengel, J. Ruiz-Hervias, J. Rodriguez and F.J. Gomez-Sanchez (see also Nanoindentation).

Keywords for this news article include: Spain, Madrid, Europe, Zirconium, Nanotechnology, Nanoindentation, Transition Elements, Emerging Technologies

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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