Composition of precipitates present in Zircaloy-2 and 4

Arias, D.; Palacios, T; Turrillo, César

doi:10.1016/0022-3115(87)90118-8

Cited by 26 publications

(9 citation statements)

References 12 publications

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“…The Zr-FeCr precipitates were also extracted using this etchant. The chemical composition of the Zr-Ni-Fe precipitates was determined by EDS X-ray analysis to be approximately Zr2Feo,5Nio,4, in agreement with earlier results (Chemelle et al, 1983;Arias et al, 1987). Traces of Cr (0.1-0.396) and Sn (1.0-1.596) were also detected in some precipitates (Fig.…”

Section: Resultssupporting

confidence: 65%

A replica technique for extracting precipitates from zirconium alloys for transmission electron microscopy analysis

Ng-Yelim

Woo

Carpenter

1990

J. Elec. Microsc. Tech.

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A reliable two-stage carbon replica technique has been developed to extract precipitates from zirconium alloys. Using this technique, all precipitating phases can be extracted from Zircaloy-2, Zr-Cr-Fe, and Zr-Nb-Fe alloys. Precipitate identification using EDS X-ray analysis and convergent beam electron diffraction was greatly facilitated in comparison to thin foils. In addition, the sensitivity for the detection of trace elements in particles was increased using extraction replicas. The chemical compositions of the precipitates as determined from both replica and thin foils were in excellent agreement.

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Section: Resultssupporting

confidence: 65%

A replica technique for extracting precipitates from zirconium alloys for transmission electron microscopy analysis

Ng-Yelim

Woo

Carpenter

1990

J. Elec. Microsc. Tech.

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“…The Laves phases are either Zr(Fe,Cr) 2 , ZrFe 2 or ZrCr 2 second phase intermetallic precipitates with Zr(Fe,Cr) 2 generally the most common [5][6][7]. The role of texture and these particles on fracture have received some limited study [4,[8][9][10][11][12][13][14][15][16][17][18][19], but the dominant failure mechanism has not been clarified.…”

Section: Introductionmentioning

confidence: 99%

In situ studies and modeling the fracture of Zircaloy-4

Cockeram

Chan

2009

Journal of Nuclear Materials

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“…Is this the amount of hydrogen that could be dissolved in the Zr-based solid solution at a given temperature, or the overall hydrogen distributed among solid solution, precipitates of second phases (typically Zr 2 M, FCC, and hexagonal C14 Laves phases [8,9]), and the hydride phase? If the former definition is correct, then the hydride solvus curve should be different for Zr-2 and Zr-4 as a function of temperature.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Some Physical Properties of Zirconium Alloys for Nuclear Applications in Support of UFD Campaign

Glazoff¹

2013

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Zirconium-based alloys Zircaloy-2 and Zircaloy-4 are widely used in the nuclear industry as cladding materials for light water reactor (LWR) fuels. These materials display a very good combination of properties such as low neutron absorption, creep behavior, stress-corrosion cracking resistance, reduced hydrogen uptake, corrosion and/or oxidation, especially in the case of Zircaloy-4. However, over the last couple of years, in the post-Fukushima Daiichi world, energetic efforts have been undertaken to improve fuel clad oxidation resistance during off-normal temperature excursions. Efforts have also been made to improve upon the already achieved levels of mechanical behavior and reduce hydrogen uptake. In order to facilitate the development of such novel materials, it is very important to achieve not only engineering control, but also a scientific understanding of the underlying material degradation mechanisms, both in working conditions and in storage of used nuclear fuel.This report strives to contribute to these efforts by constructing the thermodynamic models of both alloys; constructing of the respective phase diagrams, and oxidation mechanisms. A special emphasis was placed upon the role of zirconium suboxides in hydrogen uptake reduction and the atomic mechanisms of oxidation. To that end, computational thermodynamics calculations were conducted concurrently with first-principles atomistic modeling.

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Composition of precipitates present in Zircaloy-2 and 4

Cited by 26 publications

References 12 publications

A replica technique for extracting precipitates from zirconium alloys for transmission electron microscopy analysis

A replica technique for extracting precipitates from zirconium alloys for transmission electron microscopy analysis

In situ studies and modeling the fracture of Zircaloy-4

Modeling of Some Physical Properties of Zirconium Alloys for Nuclear Applications in Support of UFD Campaign

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