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

Conference · Mon Nov 30 23:00:00 EST 1992

OSTI ID:6774091

Motta, A T ^[1]; Howe, L M ^[2]; Okamoto, P R ^[3]

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1. Pennsylvania State Univ., University Park, PA (United States). Dept. of Nuclear Engineering
2. Atomic Energy of Canada Ltd., Chalk River, ON (Canada). Chalk River Labs.
3. Argonne National Lab., IL (United States)

Thin foils of Zircaloy-4 were irradiated with 350 KeV [sup 40]Ar ions in the dual ion beam/HVEM facility at Argonne National Laboratory at 300--650 K. The irradiation-induced amorphization of the intermetallic precipitates Zr (Cr; Fe)[sub 2] and Zr[sub 2] (Ni, Fe) was studied in-situ. For Zr (Cr, Fe)[sub 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 Zr[sub 2] (Ni,Fe) precipitates it was found that amorphization occurred at 550 and 600 K, whereas in neutron irradiation no amorphization has been observed at those temperatures. The results are discussed in context of previous neutron and electron irradiations and likely amorphization mechanisms are proposed.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6774091
• Report Number(s): ANL/MSD/CP-78354; CONF-921101--58; ON: DE93005560
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ALLOY-ZR98SN-4
ALLOYS
AMORPHOUS STATE
ARGON 40
ARGON IONS
ARGON ISOTOPES
BEAMS
CHARGED PARTICLES
CHROMIUM ADDITIONS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
DOSES
ENERGY RANGE
EVEN-EVEN NUCLEI
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INTERMETALLIC COMPOUNDS
ION BEAMS
IONS
IRON ADDITIONS
IRON ALLOYS
ISOTOPES
KEV RANGE
KEV RANGE 100-1000
LIGHT NUCLEI
MATERIALS
NUCLEI
PHYSICAL RADIATION EFFECTS
RADIATION DOSES
RADIATION EFFECTS
STABLE ISOTOPES
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
TIN ALLOYS
ZIRCALOY
ZIRCALOY 4
ZIRCONIUM ALLOYS
ZIRCONIUM BASE ALLOYS