TY - JOUR
T1 - In-situ observation of damage structure in Cu-Cr-Zr and Cu-Cr alloy during 1.25 MeV electron irradiation
AU - Hatakeyama, M.
AU - Yamamoto, T.
AU - Yasuda, K.
AU - Matsumura, S.
AU - Yasunaga, K.
AU - Sato, K.
N1 - Funding Information:
This study was financially supported by the Grant-in-Aid for Scientific Research (C) (No. 26420850 and 18 K04774). The HVEM in situ experiments were supported by the research program of “Collaborative Research Station of High-voltage Electron Microscopy” by MEXT.
Publisher Copyright:
© 2022
PY - 2022/3
Y1 - 2022/3
N2 - The sink strengths of precipitate/matrix interfaces in Cu alloys, were investigated by performing in-situ observation of electron irradiation in high-voltage electron microscopy (HVEM). Fine black spot defects, which seemed to be dislocation loops were observed at irradiation temperature ranging between RT and 373 K in Cu–Cr–Zr, Cu–Cr and GlidCop Al–60 alloys with low number density. In Cu–Cr, loops formed on a part of precipitates interfaces. Hence, a part of precipitate/matrix interfaces is a sink with interstitial bias. Whereas, most of the interfaces are neutral sinks for point defects. In the case of Cu–Cr–Zr and GlidCop Al–60, black spots formed around dislocation, which were induced during two-step heat treatment. The results showed that the precipitate/matrix interface of Cr-rich precipitates in Cu alloys serve as a strong sink for point defects.
AB - The sink strengths of precipitate/matrix interfaces in Cu alloys, were investigated by performing in-situ observation of electron irradiation in high-voltage electron microscopy (HVEM). Fine black spot defects, which seemed to be dislocation loops were observed at irradiation temperature ranging between RT and 373 K in Cu–Cr–Zr, Cu–Cr and GlidCop Al–60 alloys with low number density. In Cu–Cr, loops formed on a part of precipitates interfaces. Hence, a part of precipitate/matrix interfaces is a sink with interstitial bias. Whereas, most of the interfaces are neutral sinks for point defects. In the case of Cu–Cr–Zr and GlidCop Al–60, black spots formed around dislocation, which were induced during two-step heat treatment. The results showed that the precipitate/matrix interface of Cr-rich precipitates in Cu alloys serve as a strong sink for point defects.
UR - http://www.scopus.com/inward/record.url?scp=85125477793&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85125477793&partnerID=8YFLogxK
U2 - 10.1016/j.nme.2022.101144
DO - 10.1016/j.nme.2022.101144
M3 - Article
AN - SCOPUS:85125477793
VL - 30
JO - Nuclear Materials and Energy
JF - Nuclear Materials and Energy
SN - 2352-1791
M1 - 101144
ER -