Amorphization kinetics of Zr(Cr, Fe)2 under ion irradiation

Arthur Thompson Motta; L. M. Howe; P. R. Okamoto

Amorphization kinetics of Zr(Cr, Fe)2 under ion irradiation

Arthur Thompson Motta, L. M. Howe, P. R. Okamoto

Research output: Chapter in Book/Report/Conference proceeding › Other chapter contribution

Abstract

Thin foils of Zircaloy-4 were irradiated with 350 keV ⁴⁰Ar ions in the dual ion beam/HVEM facility at Argonne National Library at 300-650 K. The irradiation-induced amorphization of the intermetallic precipitates Zr(Cr, Fe)₂ and Zr₂(Ni, Fe) was studied in-situ. For Zr(Cr, Fe)₂ precipitates the dose-to-amorphization was found to increase exponentially with temperature, with a critical temperature of about 650 K. The amorphization morphology was shown to be homogeneous, with no preferential site for nucleation, in contrast to neutron-irradiation amorphization, which started at the precipitate-matrix interface. For Zr₂(Ni, Fe) precipitates it was found that amorphization occurred at 550 K and 600 K, whereas in neutron irradiation no amorphization has been observed at those temperatures. The results are discussed in the context of the previous experimental results of neutron and electron irradiation, and likely amorphization mechanisms are proposed.

Original language	English (US)
Title of host publication	Atomic Energy of Canada Limited, AECL (Report)
Publisher	AECL
Pages	1-9
Number of pages	9
Edition	10797
State	Published - Oct 1994

All Science Journal Classification (ASJC) codes

Energy Engineering and Power Technology
Industrial and Manufacturing Engineering

Cite this

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title = "Amorphization kinetics of Zr(Cr, Fe)2 under ion irradiation",

abstract = "Thin foils of Zircaloy-4 were irradiated with 350 keV 40Ar ions in the dual ion beam/HVEM facility at Argonne National Library at 300-650 K. The irradiation-induced amorphization of the intermetallic precipitates Zr(Cr, Fe)2 and Zr2(Ni, Fe) was studied in-situ. For Zr(Cr, Fe)2 precipitates the dose-to-amorphization was found to increase exponentially with temperature, with a critical temperature of about 650 K. The amorphization morphology was shown to be homogeneous, with no preferential site for nucleation, in contrast to neutron-irradiation amorphization, which started at the precipitate-matrix interface. For Zr2(Ni, Fe) precipitates it was found that amorphization occurred at 550 K and 600 K, whereas in neutron irradiation no amorphization has been observed at those temperatures. The results are discussed in the context of the previous experimental results of neutron and electron irradiation, and likely amorphization mechanisms are proposed.",

author = "Motta, {Arthur Thompson} and Howe, {L. M.} and Okamoto, {P. R.}",

year = "1994",

month = oct,

language = "English (US)",

pages = "1--9",

booktitle = "Atomic Energy of Canada Limited, AECL (Report)",

publisher = "AECL",

edition = "10797",

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TY - CHAP

T1 - Amorphization kinetics of Zr(Cr, Fe)2 under ion irradiation

AU - Motta, Arthur Thompson

AU - Howe, L. M.

AU - Okamoto, P. R.

PY - 1994/10

Y1 - 1994/10

N2 - Thin foils of Zircaloy-4 were irradiated with 350 keV 40Ar ions in the dual ion beam/HVEM facility at Argonne National Library at 300-650 K. The irradiation-induced amorphization of the intermetallic precipitates Zr(Cr, Fe)2 and Zr2(Ni, Fe) was studied in-situ. For Zr(Cr, Fe)2 precipitates the dose-to-amorphization was found to increase exponentially with temperature, with a critical temperature of about 650 K. The amorphization morphology was shown to be homogeneous, with no preferential site for nucleation, in contrast to neutron-irradiation amorphization, which started at the precipitate-matrix interface. For Zr2(Ni, Fe) precipitates it was found that amorphization occurred at 550 K and 600 K, whereas in neutron irradiation no amorphization has been observed at those temperatures. The results are discussed in the context of the previous experimental results of neutron and electron irradiation, and likely amorphization mechanisms are proposed.

AB - Thin foils of Zircaloy-4 were irradiated with 350 keV 40Ar ions in the dual ion beam/HVEM facility at Argonne National Library at 300-650 K. The irradiation-induced amorphization of the intermetallic precipitates Zr(Cr, Fe)2 and Zr2(Ni, Fe) was studied in-situ. For Zr(Cr, Fe)2 precipitates the dose-to-amorphization was found to increase exponentially with temperature, with a critical temperature of about 650 K. The amorphization morphology was shown to be homogeneous, with no preferential site for nucleation, in contrast to neutron-irradiation amorphization, which started at the precipitate-matrix interface. For Zr2(Ni, Fe) precipitates it was found that amorphization occurred at 550 K and 600 K, whereas in neutron irradiation no amorphization has been observed at those temperatures. The results are discussed in the context of the previous experimental results of neutron and electron irradiation, and likely amorphization mechanisms are proposed.

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M3 - Other chapter contribution

AN - SCOPUS:0028529452

SP - 1

EP - 9

BT - Atomic Energy of Canada Limited, AECL (Report)

PB - AECL

ER -

Amorphization kinetics of Zr(Cr, Fe)2 under ion irradiation

Abstract

All Science Journal Classification (ASJC) codes

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