Influence of copper precipitates on clustering behavior of alloying elements observed in Japanese reactor pressure vessel surveillance materials using atom probe tomography

2020 ◽  
Vol 542 ◽  
pp. 152508
Author(s):  
Kenta Murakami
2010 ◽  
Vol 1264 ◽  
Author(s):  
Hefei Huang ◽  
Bertrand Radiguet ◽  
Patrick Todeschini ◽  
Guillaume Chas ◽  
Philippe Pareige

AbstractA low copper reactor pressure vessel steel was characterised by atom probe tomography after neutron irradiation at different fluences. The specimens were irradiated within the frame of the Surveillance Program of a production reactor. Roughly spherical clusters enriched in nickel, manganese, silicon and, in a lesser extent, phosphorus and copper were observed at all fluences. The chemical composition of these clusters shows no evolution with fluence, as well as their diameter, close to 3 nm. Their number density increases linearly with the neutron fluence. A continuous segregation of the elements found in the clusters is also observed along dislocation lines, with similar enrichments.


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Masaki Shimodaira ◽  
Takeshi Toyama ◽  
Fumihiko Takahama ◽  
Naoki Ebisawa ◽  
Yasuko Nozawa ◽  
...  

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M.G. Burke ◽  
B. Gault ◽  
D.Wf. Saxey ◽  
P. Styman ◽  
...  

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pp. 1460-1463
Author(s):  
Masaki Shimodaira ◽  
Takeshi Toyama ◽  
Fumihiko Takahama ◽  
Naoki Ebisawa ◽  
Yasuko Nozawa ◽  
...  

Materia Japan ◽  
2008 ◽  
Vol 47 (12) ◽  
pp. 619-619
Author(s):  
Kenji Nishida ◽  
Kenji Dohi ◽  
Akiyoshi Nomoto ◽  
Naoki Soneda

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pp. 379-380
Author(s):  
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Takeshi TOYAMA ◽  
Zheng TANG ◽  
Masayuki HASEGAWA ◽  
Abderrahim Almazouzi ◽  
...  

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