Radiation induced segregation and precipitation behavior in self-ion irradiated Ferritic/Martensitic HT9 steel
Radiation induced segregation and precipitation behavior in self-ion irradiated Ferritic/Martensitic HT9 steel
复制标题
自离子辐照铁素体/马氏体 HT9 钢中的辐射诱导偏析和沉淀行为
DOI:
10.1016/j.jnucmat.2017.04.040
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发表时间:
2017
影响因子:
3.1
通讯作者:
Zheng C
中科院分区:
文献类型:
--
作者:
Zheng C
In this study, Ferritic/Martensitic (F/M) HT9 steel was irradiated to 20 displacements per atom (dpa) at 600 nm depth at 420 and 440 °C, and to 1, 10 and 20 dpa at 600 nm depth at 470 °C using 5 MeV Fe++ ions. The characterization was conducted using ChemiSTEM and Atom Probe Tomography (APT), with a focus on radiation induced segregation and precipitation. Ni and/or Si segregation at defect sinks (grain boundaries, dislocation lines, carbide/matrix interfaces) together with Ni, Si, Mn rich G-phase precipitation were observed in self-ion irradiated HT9 except in very low dose case (1 dpa at 470 °C). Some G-phase precipitates were found to nucleate heterogeneously at defect sinks where Ni and/or Si segregated. In contrast to what was previously reported in the literature for neutron irradiated HT9, no Cr-rich α′ phase, χ-phases, η phase and voids were found in self-ion irradiated HT9. The difference of observed microstructures is probably due to the difference of irradiation dose rate between ion irradiation and neutron irradiation. In addition, the average size and number density of G-phase precipitates were found to be sensitive to both irradiation temperature and dose. With the same irradiation dose, the average size of G-phase increased whereas the number density decreased with increasing irradiation temperature. Within the same irradiation temperature, the average size increased with increasing irradiation dose.
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DOI:
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发表时间:
2012
期刊:
影响因子:
--
作者:
O. Anderoglu;J. V. D. Bosch;P. Hosemann;E. Stergar;B. H. Sencer;D. Bhattacharyya;R. Dickerson;P. Dickerson;M. Hartl;S. Maloy
通讯作者:
S. Maloy
影响因子:
3.1
作者:
MANSUR, LK
通讯作者:
MANSUR, LK
DOI:
--
发表时间:
2011
期刊:
影响因子:
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作者:
B. H. Sencer;J. Kennedy;J. Cole;S. Maloy;F. Garner
通讯作者:
F. Garner
影响因子:
3.1
作者:
B. H. Sencer;J. Kennedy;J. Cole;S. Maloy;F. Garner
通讯作者:
F. Garner
DOI:
--
发表时间:
2011
期刊:
影响因子:
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作者:
Z. Jiao;V. Shankar;G. Was
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G. Was