TY - JOUR
T1 - Correlation between hydrogen distribution in V-4Cr-4Ti alloy and impact strength
AU - Hatano, Y.
AU - Homma, H.
AU - Sakamura, T.
AU - Saitoh, H.
AU - Nagasaka, T.
AU - Muroga, T.
AU - Matsuyama, M.
N1 - Funding Information:
This study has been supported in part by the NIFS LHD Project Research Collaboration (NIFS04KOBR001), Iketani Science and Technology Foundation (0191085A), and Grant-in-Aid for Scientific Research on Priority Areas, 476, Tritium Science and Technology for Fusion Reactor from MEXT. A part of experiments was carried out in Life Science Research Center, University of Toyama.
PY - 2009/4/30
Y1 - 2009/4/30
N2 - Distribution of hydrogen isotopes was examined by tritium radioluminography using imaging plates for specimens of a V-4Cr-4Ti alloy prepared from two different plates fabricated with cold rolling under two different conditions (93% and 96% reduction in thickness) and recrystallization annealing. Influence of hydrogen on impact strength was also studied. Radioluminographs showed that tritium was concentrated in band-like regions where Ti(C,N,O) precipitates were densely distributed. The extent of tritium accumulation in the band-like regions and their shapes, however, were different between the two types of specimens; the band-like regions were thinner and more elongated, and the trapping effects of precipitates was smaller for the specimen prepared with higher extent of cold working. On the other hand, this type of specimen showed lower susceptibility to hydrogen embrittlement. These observations indicated that precipitate distribution prepared with higher extent of cold working is preferable to provide better durability against hydrogen embrittlement.
AB - Distribution of hydrogen isotopes was examined by tritium radioluminography using imaging plates for specimens of a V-4Cr-4Ti alloy prepared from two different plates fabricated with cold rolling under two different conditions (93% and 96% reduction in thickness) and recrystallization annealing. Influence of hydrogen on impact strength was also studied. Radioluminographs showed that tritium was concentrated in band-like regions where Ti(C,N,O) precipitates were densely distributed. The extent of tritium accumulation in the band-like regions and their shapes, however, were different between the two types of specimens; the band-like regions were thinner and more elongated, and the trapping effects of precipitates was smaller for the specimen prepared with higher extent of cold working. On the other hand, this type of specimen showed lower susceptibility to hydrogen embrittlement. These observations indicated that precipitate distribution prepared with higher extent of cold working is preferable to provide better durability against hydrogen embrittlement.
UR - http://www.scopus.com/inward/record.url?scp=64749114494&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2008.12.178
DO - 10.1016/j.jnucmat.2008.12.178
M3 - 学術論文
AN - SCOPUS:64749114494
SN - 0022-3115
VL - 386-388
SP - 569
EP - 571
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - C
ER -