Growth Characteristics of Hydride for Aging Treated U-5.5wt.%Nb Alloy

He Fei Ji; Jiang Rong Yang; Gui Chao Hu; Chun Li Jiang

doi:10.4028/www.scientific.net/AMR.881-883.87

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Formation the Polypyrrole / Chitosan / Polylactic Acid Microencapsules
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Growth Characteristics of Hydride for Aging Treated U-5.5wt.%Nb Alloy
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Determination of 17β-Estradiol Based on Electropolymerized-Molecularly Imprinted Polymer on Gold Nanoparticles-Graphene Modified Electrode
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The Study of Composite Substituting Mercury Corrosion Inhibitors for Zinc in Zinc-Manganese Battery
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Growth Characteristics of Hydride for Aging Treated U-5.5wt.%Nb Alloy

Abstract:

The hydriding behavior of as-quenched U-5.5Nb alloy followed by 400 °C×3h aging treatment has been studied at 100 °C with the hydrogen pressure specially chosen at 1.0 bar. The pitting and initial growth of hydride was in-situ monitored by hot stage microscope. The morphology and positions of hydrides on sample surface were then carefully studied by the laser scanning confocal microscope (LSCM) and scanning electron microscope (SEM) which were also applied for investigating the microstructure changes before and after the aging treatment. It is clearly found that the acicular phase all over the metal matrix caused by the 400 °C, 3 hr heat-treatment determined the preferential growth of the hydride in specific directions.