TY - JOUR
T1 - Investigation on the microstructure of W-coated low-activation alloy V-4Cr-4Ti
AU - Watanabe, H.
AU - Tokunaga, T.
AU - Yoshida, N.
AU - Nagasaka, T.
AU - Muroga, T.
PY - 2013/4/10
Y1 - 2013/4/10
N2 - Microstructures of vacuum plasma sprayed (VPS) and brazed W on NIFS-HEAT-2 were studied by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). During the VPS process, growth of grains perpendicular to the interface was prominent. The blocky Ti-oxides, which have a strong effect on the mechanical properties before and after irradiation, were dissolved in the interface region of NIFS-HEAT-2. Understanding the effect of heat treatment (namely, post-coating heat treatment) on W-coated materials is important to reduce the irradiation induced hardening effects on the materials. After a heat load of about 5 MW/m2 (∼16 cycles), the surface of VPS-W has a very fine rough structure but no prominent cracks due to thermal heat loads were detected.
AB - Microstructures of vacuum plasma sprayed (VPS) and brazed W on NIFS-HEAT-2 were studied by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). During the VPS process, growth of grains perpendicular to the interface was prominent. The blocky Ti-oxides, which have a strong effect on the mechanical properties before and after irradiation, were dissolved in the interface region of NIFS-HEAT-2. Understanding the effect of heat treatment (namely, post-coating heat treatment) on W-coated materials is important to reduce the irradiation induced hardening effects on the materials. After a heat load of about 5 MW/m2 (∼16 cycles), the surface of VPS-W has a very fine rough structure but no prominent cracks due to thermal heat loads were detected.
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U2 - 10.1016/j.jnucmat.2013.02.051
DO - 10.1016/j.jnucmat.2013.02.051
M3 - Article
AN - SCOPUS:84884908129
SN - 0022-3115
VL - 442
SP - S292-S296
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1-3 SUPPL.1
ER -