|Effect of yttrium on nucleation and growth of zirconium hydrides|
|C. J.; Xiong Li, L. Y.; Wu, E. D.; Liu, S.
|Source Publication||Journal of Nuclear Materials
|Abstract||Addition of yttrium in zirconium causes precipitates of yttrium, which form two types of particles and are oxidized upon heat treatment. One type of particles with sub-micrometer scale sizes has a low population, whereas the other with nano scale sizes has a high population and cluster distribution. Owing to strong affinity of yttrium to hydrogen, the nanoparticles, mostly within the grains of the Zr-Y alloy, attract nucleation of hydrides at the clusters of the nanoparticles and cause preferential distribution of intragranular hydrides. In comparison with that of Zr, additional nanoparticles in the Zr-Y alloy impede further growth of hydride precipitates during hydriding. It is deduced that the impediment of growing hydride precipitates by the nanoparticles is developed during an auto-catalytic nucleation process, which leads to formation of thin and intragranular hydrides, favorable to mitigation of hydride embrittlement. (C) 2014 Elsevier B.V. All rights reserved.|
; xiong, liangyin
; wu, erdong
; liu, shi] chinese acad sci, inst met res, dept mat special environm, shenyang 110016, peoples r china.
; liu, s (reprint author), chinese acad sci, inst met res, dept mat special environm, 72 wenhua rd, shenyang 110016, peoples r china.
|Keyword||Zircaloy Cladding Tubes
C. J.,Xiong Li, L. Y.,Wu, E. D.,et al. Effect of yttrium on nucleation and growth of zirconium hydrides[J]. Journal of Nuclear Materials,2015,457:142-147.
C. J.,Xiong Li, L. Y.,Wu, E. D.,&Liu, S..(2015).Effect of yttrium on nucleation and growth of zirconium hydrides.Journal of Nuclear Materials,457,142-147.
C. J.,et al."Effect of yttrium on nucleation and growth of zirconium hydrides".Journal of Nuclear Materials 457(2015):142-147.
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