TY - GEN
T1 - Irradiation-enhanced Cu-precipitation in Fe-Cu alloys studied by positron annihilation spectroscopy and electrical resistivity measurement
AU - Onitsuka, T.
AU - Takenaka, M.
AU - Abe, H.
AU - Kuramoto, E.
AU - Ohkubo, H.
AU - Nagai, Y.
AU - Hasegawa, M.
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2004
Y1 - 2004
N2 - The positron annihilation measurements (CDB and positron lifetime measurement) and the electrical resistivity measurement were made for the isochronal annealing process of the Fe-Cu alloy specimens irradiated with electrons at low temperature. The peak in the high momentum region in CDB ratio curve grows prominently, showing the formation of Cu precipitates. W-parameter in the S-W plot already started to increase at 150K in Fe-0,6wt%Cu alloy specimens. The vacancy component I2 in the lifetime spectrum is kept almost constant beyond stage ID (110K) to about 300K, In the electrical resistivity measurement prominent recovery peaks appear at about 140K and 155K and these peak temperatures decrease with increasing Cu concentration. These results show that even at low temperature region below stage III self-interstitial atoms (SIAs) contribute to the formation of Cu precipitates through the mixed dumbbell mechanism and beyond stage III vacancies mainly contribute.
AB - The positron annihilation measurements (CDB and positron lifetime measurement) and the electrical resistivity measurement were made for the isochronal annealing process of the Fe-Cu alloy specimens irradiated with electrons at low temperature. The peak in the high momentum region in CDB ratio curve grows prominently, showing the formation of Cu precipitates. W-parameter in the S-W plot already started to increase at 150K in Fe-0,6wt%Cu alloy specimens. The vacancy component I2 in the lifetime spectrum is kept almost constant beyond stage ID (110K) to about 300K, In the electrical resistivity measurement prominent recovery peaks appear at about 140K and 155K and these peak temperatures decrease with increasing Cu concentration. These results show that even at low temperature region below stage III self-interstitial atoms (SIAs) contribute to the formation of Cu precipitates through the mixed dumbbell mechanism and beyond stage III vacancies mainly contribute.
KW - Cu Precipitates in Fe
KW - E-Irradiation
KW - Mixed Dumb-Bell
KW - Positron Lifetime
KW - Resistivity
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U2 - 10.4028/www.scientific.net/msf.445-446.168
DO - 10.4028/www.scientific.net/msf.445-446.168
M3 - Conference contribution
AN - SCOPUS:3142680408
SN - 9780878499366
T3 - Materials Science Forum
SP - 168
EP - 170
BT - Positron Annihilation
A2 - Hyodo, Toshio
A2 - Saito, Haruo
A2 - Kobayashi, Yoshinori
A2 - Nagashima, Yasuyuki
PB - Trans Tech Publications Ltd
T2 - Positron Annihilation: Proceedings of the 13th International Conference on Positron Annihilation, ICPA-13
Y2 - 7 September 2003 through 12 September 2003
ER -