Influence of Zircaloy cladding composition on hydride formation during aqueous hydrogen charging

S. Rajasekhara; P. G. Kotula; D. G. Enos; B. L. Doyle; B. G. Clark

doi:10.1016/j.jnucmat.2016.04.055

Influence of Zircaloy cladding composition on hydride formation during aqueous hydrogen charging

S. Rajasekhara
, P. G. Kotula
, D. G. Enos
, B. L. Doyle
, B. G. Clark

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Although hydrogen uptake in Zirconium (Zr) based claddings has been a topic of many studies, hydrogen uptake as a function of alloy composition has received little attention. In this work, commercial Zr-based cladding alloys (Zircaloy-2, Zircaloy-4 and ZIRLO™), differing in composition but with similar initial textures, grain sizes, and surface roughness, were aqueously charged with hydrogen for 100, 300, and 1000 s at nominally 90 °C to produce hydride layers of varying thicknesses. Transmission electron microscope characterization following aqueous charging showed hydride phase and orientation relationship were identical in all three alloys. However, elastic recoil detection measurements confirmed that surface hydride layers in Zircaloy-2 and Zircaloy-4 were an order of magnitude thicker relative to ZIRLO™.

Original language	English
Pages (from-to)	222-228
Number of pages	7
Journal	Journal of Nuclear Materials
Volume	489
DOIs	https://doi.org/10.1016/j.jnucmat.2016.04.055
State	Published - Jun 1 2017
Externally published	Yes

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title = "Influence of Zircaloy cladding composition on hydride formation during aqueous hydrogen charging",

abstract = "Although hydrogen uptake in Zirconium (Zr) based claddings has been a topic of many studies, hydrogen uptake as a function of alloy composition has received little attention. In this work, commercial Zr-based cladding alloys (Zircaloy-2, Zircaloy-4 and ZIRLO{\texttrademark}), differing in composition but with similar initial textures, grain sizes, and surface roughness, were aqueously charged with hydrogen for 100, 300, and 1000 s at nominally 90 °C to produce hydride layers of varying thicknesses. Transmission electron microscope characterization following aqueous charging showed hydride phase and orientation relationship were identical in all three alloys. However, elastic recoil detection measurements confirmed that surface hydride layers in Zircaloy-2 and Zircaloy-4 were an order of magnitude thicker relative to ZIRLO{\texttrademark}.",

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doi = "10.1016/j.jnucmat.2016.04.055",

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T1 - Influence of Zircaloy cladding composition on hydride formation during aqueous hydrogen charging

AU - Rajasekhara, S.

AU - Kotula, P. G.

AU - Enos, D. G.

AU - Doyle, B. L.

AU - Clark, B. G.

PY - 2017/6/1

Y1 - 2017/6/1

N2 - Although hydrogen uptake in Zirconium (Zr) based claddings has been a topic of many studies, hydrogen uptake as a function of alloy composition has received little attention. In this work, commercial Zr-based cladding alloys (Zircaloy-2, Zircaloy-4 and ZIRLO™), differing in composition but with similar initial textures, grain sizes, and surface roughness, were aqueously charged with hydrogen for 100, 300, and 1000 s at nominally 90 °C to produce hydride layers of varying thicknesses. Transmission electron microscope characterization following aqueous charging showed hydride phase and orientation relationship were identical in all three alloys. However, elastic recoil detection measurements confirmed that surface hydride layers in Zircaloy-2 and Zircaloy-4 were an order of magnitude thicker relative to ZIRLO™.

AB - Although hydrogen uptake in Zirconium (Zr) based claddings has been a topic of many studies, hydrogen uptake as a function of alloy composition has received little attention. In this work, commercial Zr-based cladding alloys (Zircaloy-2, Zircaloy-4 and ZIRLO™), differing in composition but with similar initial textures, grain sizes, and surface roughness, were aqueously charged with hydrogen for 100, 300, and 1000 s at nominally 90 °C to produce hydride layers of varying thicknesses. Transmission electron microscope characterization following aqueous charging showed hydride phase and orientation relationship were identical in all three alloys. However, elastic recoil detection measurements confirmed that surface hydride layers in Zircaloy-2 and Zircaloy-4 were an order of magnitude thicker relative to ZIRLO™.

UR - https://www.scopus.com/pages/publications/85017410975

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DO - 10.1016/j.jnucmat.2016.04.055

M3 - Article

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SP - 222

EP - 228

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

Influence of Zircaloy cladding composition on hydride formation during aqueous hydrogen charging

Abstract

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