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The effect of iron ...
The effect of iron on dislocation evolution in model and commercial zirconium alloys
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- Topping, Matthew (author)
- University of Manchester
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- Harte, Allan (author)
- University of Manchester
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- Frankel, Philipp (author)
- University of Manchester
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- Race, Christopher (author)
- University of Manchester
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- Sundell, Gustav, 1985 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Thuvander, Mattias, 1968 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Andrén, Hans-Olof, 1947 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Jädernäs, Daniel (author)
- Studsvik
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- Tejland, Pia, 1978 (author)
- Studsvik
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Romero, Javier E. (author)
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- Darby, Edward C. (author)
- Rolls-Royce PLC
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- Dumbill, Simon (author)
- National Nuclear Laboratory
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- Hallstadius, Lars (author)
- Westinghouse Electric Sweden AB
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- Preuss, Michael (author)
- University of Manchester
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(creator_code:org_t)
- 2018
- 2018
- English.
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In: ASTM Special Technical Publication. - 0066-0558. ; STP 1597, s. 796-822
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Abstract
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- Although the evolution of irradiation-induced dislocation loops has been well correlated with irradiation-induced growth phenomena, the effect of alloying elements on this evolution remains elusive, especially at low fluences. To develop a more mechanistic understanding of the role iron has on loop formation, we used state-of-the-art techniques to study a proton-irradiated Zr-0.1Fe alloy and proton- and neutron-irradiated Zircaloy-2. The two alloys were irradiated with 2-MeV protons up to 7 dpa at 350°C and Zircaloy-2 up to 14.7 × 1025n • m-2, approximately 24 dpa, in a boiling water reactor at approximately 300°C. Baseline transmission electron microscopy showed that the Zr3Fe secondary-phase particles in the binary system were larger and fewer in number than the Zr (Fe, Cr)2and Zr2(Fe, Ni) particles in Zircaloy-2. An analysis of the irradiated binary alloy revealed only limited dissolution of Ze3Fe, suggesting little dispersion of iron into the matrix, while at the same time a higher 〈a〉-loop density was observed compared with Zircaloy-2 at equivalent proton dose levels. We also found that the redistribution of iron during irradiation led to the formation of iron nanoclusters. A delay in the onset of 〈c〉-loop nucleation in proton-irradiated Zircaloy-2 compared with the binary alloy was observed. The effect of iron redistributed from secondary-phase particles because of dissolution on the density and morphology of 〈a〉 and 〈c〉 loops is described. The implication this may have on irradiation-induced growth of zirconium fuel cladding is also discussed.
Subject headings
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Keyword
- Zirconium
- BWR
- Precipitation
- BF-STEM
- Proton irradiation
- Zircaloy-2
- Dislocation analysis
- Irradiation growth
- Iron
Publication and Content Type
- kon (subject category)
- ref (subject category)
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Topping, Matthew
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Harte, Allan
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Frankel, Philipp
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Race, Christophe ...
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Sundell, Gustav, ...
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Thuvander, Matti ...
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show more...
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Andrén, Hans-Olo ...
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Jädernäs, Daniel
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Tejland, Pia, 19 ...
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Romero, Javier E ...
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Darby, Edward C.
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Dumbill, Simon
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Hallstadius, Lar ...
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Preuss, Michael
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