Reduced activation ferritic/martensitic steels (RAFs), such as F
82
H (Fe-
8
Cr-
2
W-0.
2
V-0.04Ta-0.1C), are the leading candidates for structural materials of fusion reactors, and it is essential for the development of RAFs to assure its good for fusion application. In this study, the influence of Ti on impact property was studied based on microstructural analyses and charpy impact tests which were performed in general-purity F
82
H (0.004Ti-0.0060N) and high-purity F
82
H (<0.001Ti-0.0014N). In general-purity F
82
H, its impact property around DBTT showed both 100% brittle fracture and brittle-ductile, and this tendency did not appear in high-purity F
82
H. SEM observation on those brittle fracture surfaces of general-purity F
82
H revealed the presence of
Al2O3
-Ta(V, Ti)O composite oxides at the fracture initiation point. The size distribution analyses of oxides indicate that the complex oxide in general-purity F
82
H showed a higher number density than in high-purity F
82
H. In addition to this, EDS analyses showed that complex oxides in general-purity F
82
H had a strong peak of Ti, but they were not detected in the oxides in high-purity F
82
H. These results suggest that Ti has a significant influence on the formation of oxides, which in turn affects impact property.
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