TY - GEN
T1 - Amorphization kinetics of Zr (Cr, Fe)2 under ion irradiation
AU - Motta, Arthur Thompson
AU - Howe, L. M.
AU - Okamoto, P. R.
PY - 1993
Y1 - 1993
N2 - Thin foils of Zircaloy-4 were irradiated with 350 KeV 4.0Ar 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)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 4.0Ar 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)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.
UR - https://www.scopus.com/pages/publications/0027192690
UR - https://www.scopus.com/pages/publications/0027192690#tab=citedBy
M3 - Conference contribution
AN - SCOPUS:0027192690
SN - 1558991743
T3 - Materials Research Society Symposium Proceedings
SP - 517
EP - 522
BT - Materials Research Society Symposium Proceedings
PB - Publ by Materials Research Society
T2 - Beam Solid Interactions: Fundamentals and Applications
Y2 - 30 November 1992 through 4 December 1992
ER -