Influence of alloying elements on grain-growth in Zr(Fe) and Cu(Fe) thin-films under in situ ion-irradiation

D. Kaoumi; A. T. Motta; R. C. Birtcher

doi:10.1016/j.jnucmat.2008.08.011

Influence of alloying elements on grain-growth in Zr(Fe) and Cu(Fe) thin-films under in situ ion-irradiation

D. Kaoumi, A. T. Motta, R. C. Birtcher

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Abstract

Thin-films of Zr(Fe) and Cu(Fe) were ion-irradiated in situ in a transmission electron microscope to study the influence of alloying elements on grain-growth. These two systems are different in that Zr-Fe has a negative heat of mixing and Cu-Fe a positive heat of mixing. Irradiations conducted at temperatures of 20-573 K showed precipitation in Zr(Fe) but not in Cu(Fe). The grain sizes increased monotonically with fluence and in both cases the pure metal exhibited more grain-growth than the alloy. A more drastic reduction of grain-growth rate was observed in Zr(Fe) (where precipitate drag occurred) than in Cu-Fe (where only solute drag was available). Zr(Fe) samples were also subjected to 1 MeV electron irradiation but no grain-growth was observed. The results are discussed in terms of the mechanisms of grain-growth under irradiation.

Original language	English (US)
Pages (from-to)	184-189
Number of pages	6
Journal	Journal of Nuclear Materials
Volume	382
Issue number	2-3
DOIs	https://doi.org/10.1016/j.jnucmat.2008.08.011
State	Published - Dec 1 2008

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Materials Science(all)
Nuclear Energy and Engineering

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10.1016/j.jnucmat.2008.08.011

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title = "Influence of alloying elements on grain-growth in Zr(Fe) and Cu(Fe) thin-films under in situ ion-irradiation",

abstract = "Thin-films of Zr(Fe) and Cu(Fe) were ion-irradiated in situ in a transmission electron microscope to study the influence of alloying elements on grain-growth. These two systems are different in that Zr-Fe has a negative heat of mixing and Cu-Fe a positive heat of mixing. Irradiations conducted at temperatures of 20-573 K showed precipitation in Zr(Fe) but not in Cu(Fe). The grain sizes increased monotonically with fluence and in both cases the pure metal exhibited more grain-growth than the alloy. A more drastic reduction of grain-growth rate was observed in Zr(Fe) (where precipitate drag occurred) than in Cu-Fe (where only solute drag was available). Zr(Fe) samples were also subjected to 1 MeV electron irradiation but no grain-growth was observed. The results are discussed in terms of the mechanisms of grain-growth under irradiation.",

author = "D. Kaoumi and Motta, {A. T.} and Birtcher, {R. C.}",

note = "Funding Information: The authors would like to thank the Materials Research Institute at Penn State, especially W. Drawl and L. Pillione for assistance with thin-film deposition, T. Van der Berghe, J. Perinet and I. Monnet at the CEA of Saclay for assistance during the electron irradiations performed, and A. Liu, E. Ryan, P. Baldo at Argonne National Laboratory for their assistance during the ion-irradiation experiments. The ion-irradiations were conducted in the IVEM-Accelerator facility at Argonne National Laboratory, which is supported as a User Facility by the US Department of Energy, Basic Energy Sciences, under contract W-31-109-ENG-38. This study was funded by DOE Nuclear Engineering Education Research program under Contract No. DOE-NEER (DE-FG07-01ID14115). ",

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AU - Kaoumi, D.

AU - Motta, A. T.

AU - Birtcher, R. C.

N1 - Funding Information: The authors would like to thank the Materials Research Institute at Penn State, especially W. Drawl and L. Pillione for assistance with thin-film deposition, T. Van der Berghe, J. Perinet and I. Monnet at the CEA of Saclay for assistance during the electron irradiations performed, and A. Liu, E. Ryan, P. Baldo at Argonne National Laboratory for their assistance during the ion-irradiation experiments. The ion-irradiations were conducted in the IVEM-Accelerator facility at Argonne National Laboratory, which is supported as a User Facility by the US Department of Energy, Basic Energy Sciences, under contract W-31-109-ENG-38. This study was funded by DOE Nuclear Engineering Education Research program under Contract No. DOE-NEER (DE-FG07-01ID14115).

PY - 2008/12/1

Y1 - 2008/12/1

N2 - Thin-films of Zr(Fe) and Cu(Fe) were ion-irradiated in situ in a transmission electron microscope to study the influence of alloying elements on grain-growth. These two systems are different in that Zr-Fe has a negative heat of mixing and Cu-Fe a positive heat of mixing. Irradiations conducted at temperatures of 20-573 K showed precipitation in Zr(Fe) but not in Cu(Fe). The grain sizes increased monotonically with fluence and in both cases the pure metal exhibited more grain-growth than the alloy. A more drastic reduction of grain-growth rate was observed in Zr(Fe) (where precipitate drag occurred) than in Cu-Fe (where only solute drag was available). Zr(Fe) samples were also subjected to 1 MeV electron irradiation but no grain-growth was observed. The results are discussed in terms of the mechanisms of grain-growth under irradiation.

AB - Thin-films of Zr(Fe) and Cu(Fe) were ion-irradiated in situ in a transmission electron microscope to study the influence of alloying elements on grain-growth. These two systems are different in that Zr-Fe has a negative heat of mixing and Cu-Fe a positive heat of mixing. Irradiations conducted at temperatures of 20-573 K showed precipitation in Zr(Fe) but not in Cu(Fe). The grain sizes increased monotonically with fluence and in both cases the pure metal exhibited more grain-growth than the alloy. A more drastic reduction of grain-growth rate was observed in Zr(Fe) (where precipitate drag occurred) than in Cu-Fe (where only solute drag was available). Zr(Fe) samples were also subjected to 1 MeV electron irradiation but no grain-growth was observed. The results are discussed in terms of the mechanisms of grain-growth under irradiation.

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Influence of alloying elements on grain-growth in Zr(Fe) and Cu(Fe) thin-films under in situ ion-irradiation

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