TY - JOUR
T1 - Mediation of high temperature radiation damage in bcc iron by Au or Cu precipitation
AU - Zhang, Shasha
AU - Yao, Zhengjun
AU - Zhang, Zhaokuan
AU - Oleksandr, Moliar
AU - Chen, Feida
AU - Cao, Xingzhong
AU - Zhang, Peng
AU - van Dijk, Niels
AU - van der Zwaag, Sybrand
N1 - Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
PY - 2020
Y1 - 2020
N2 - High temperature radiation damage in binary bcc Fe alloys containing 1 atomic % Au or Cu due to Fe ion irradiation at 550 °C to a peak dose of 2.8 and 8.3 dpa is studied. The precipitation behavior of gold and copper and its correlation to the irradiation-induced defects is studied by transmission electron microscopy and variable energy positron annihilation spectroscopy (VEPAS). The increase of S parameters from VEPAS indicates the formation of open volume defects upon irradiation. Disc-shaped Au precipitates, grown from the irradiation induced dislocations, are observed in the Fe-Au alloy. In the Fe-Cu alloy, spherical Cu particles are formed but no direct connection between Cu precipitates and radiation damage is detected. For the Fe-Au alloy, the surface hardness dramatically increases for a dose of 2.8 dpa, with a slight decrease as the irradiation dose is enhanced to 8.3 dpa. In the Fe-Cu alloy, radiation hardening increases continuously.
AB - High temperature radiation damage in binary bcc Fe alloys containing 1 atomic % Au or Cu due to Fe ion irradiation at 550 °C to a peak dose of 2.8 and 8.3 dpa is studied. The precipitation behavior of gold and copper and its correlation to the irradiation-induced defects is studied by transmission electron microscopy and variable energy positron annihilation spectroscopy (VEPAS). The increase of S parameters from VEPAS indicates the formation of open volume defects upon irradiation. Disc-shaped Au precipitates, grown from the irradiation induced dislocations, are observed in the Fe-Au alloy. In the Fe-Cu alloy, spherical Cu particles are formed but no direct connection between Cu precipitates and radiation damage is detected. For the Fe-Au alloy, the surface hardness dramatically increases for a dose of 2.8 dpa, with a slight decrease as the irradiation dose is enhanced to 8.3 dpa. In the Fe-Cu alloy, radiation hardening increases continuously.
KW - Au/Cu precipitation
KW - bcc Fe
KW - Hardening
KW - Nanoindentation
KW - Positron annihilation spectroscopy
KW - Radiation damage
UR - http://www.scopus.com/inward/record.url?scp=85075713654&partnerID=8YFLogxK
U2 - 10.1016/j.nimb.2019.11.035
DO - 10.1016/j.nimb.2019.11.035
M3 - Article
AN - SCOPUS:85075713654
VL - 463
SP - 69
EP - 75
JO - Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
SN - 0168-583X
ER -