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https://apo.ansto.gov.au/dspace/handle/10238/8128
Title: | Microstructure and texture analysis of [delta]-hydride precipitation in Zircaloy-4 materials by electron microscopy and neutron diffraction |
Authors: | Wang, Z Garbe, U Li, HJ Wang, Y Studer, AJ Sun, G Harrison, RP Liao, X Vicente Alvarez, MA Santisteban, JR Kong, C |
Keywords: | Microstructure Zircaloy Neutron diffraction Microstructure Electron sources Zirconium alloys |
Issue Date: | 1-Jan-2014 |
Publisher: | International Union of Crystallography |
Citation: | Wang, Z., Garbe, U., Li, H., Wang, Y., Studer, A. J., Sun, G., Harrison, R. P., Liao, X., Vicente Alvarez, M. A., Santisteban, J. R., & Kong, C. (2014). Microstructure and texture analysis of [delta]-hydride precipitation in Zircaloy-4 materials by electron microscopy and neutron diffraction. Journal of Applied Crystallography, 47(1), 303-315. doi:10.1107/S1600576713031956 |
Abstract: | This work presents a detailed microstructure and texture study of various hydrided Zircaloy-4 materials by neutron diffraction and microscopy. The results show that the precipitated [delta]-ZrH1.66 generally follows the [delta](111)//[alpha](0001) and [delta][1{\overline 1}0]//[alpha][11{\overline 2}0] orientation relationship with the [alpha]-Zr matrix. The [delta]-hydride displays a weak texture that is determined by the texture of the [alpha]-Zr matrix, and this dependence essentially originates from the observed orientation correlation between [alpha]-Zr and [delta]-hydride. Neutron diffraction line profile analysis and high-resolution transmission electron microscopy observations reveal a significant number of dislocations present in the [delta]-hydride, with an estimated average density one order of magnitude higher than that in the [alpha]-Zr matrix, which contributes to the accommodation of the substantial misfit strains associated with hydride precipitation in the [alpha]-Zr matrix. The present observations provide an insight into the behaviour of [delta]-hydride precipitation in zirconium alloys and may help with understanding the induced embrittling effect of hydrides.© 2014, International Union of Crystallography. |
Gov't Doc #: | 7675 |
URI: | http://dx.doi.org/10.1107/S1600576713031956 http://apo.ansto.gov.au/dspace/handle/10238/8128 |
Appears in Collections: | Journal Articles |
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