ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Neutron incoherent scattering measurements were conducted on Zircaloy-4 roundbars. The specimens were charged in a tube furnace at 430 °C, using a 12.5 vol. % hydrogenin an argon mixture for 30, 60, and 90 minutes at 13.8 kPa pressure. The volume-averageneutron diffraction measurements showed the presence of the face-centered-cubic deltazirconium hydride (δ-ZrH2) phase in the hydrogenated specimens. The assessment of thebackground in the diffraction profiles due to the incoherent scattering from the hydrogenatoms was carried out by performing inelastic scans around zero energy transfer and at afixed two-theta value for which there was only flat background and no coherent scattering.To estimate the relative amount of hydrogen in the Zircaloy-4 samples, the increase inincoherent scattering intensities with hydrogen content was calibrated using samples forwhich the hydrogen content was known. Measurement of the background scattering fromlocations within the round bar was also performed to map the distribution of hydrogencontent
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.1443.pdf
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