TY - JOUR
T1 - Moderation of negative oxygen effects by small yttrium addition to low activation vanadium alloys
AU - Miyazawa, Takeshi
AU - Nagasaka, Takuya
AU - Hishinuma, Yoshimitsu
AU - Muroga, Takeo
AU - Li, Yanfen
N1 - Funding Information:
The author is grateful to Mr. M. Yamazaki in the Oarai branch, Institute for Materials Research, Tohoku University, for supports in the impact tests, and to a financial support of Research Foundation for the Electrotechnology of Chubu.
Publisher Copyright:
© 2011, Taylor and Francis Inc. All rights reserved.
PY - 2011
Y1 - 2011
N2 - In order to improve irradiation embrittlement of vanadium alloys for fusion reactors, yttrium (Y) has been added reducing the interstitial oxygen impurity. However Y addition can also degrade high-temperature strength, because Y could scavenge oxygen in solid solution, which is a strong hardening agent in vanadium alloys. In this study, the effect of Y addition and oxygen level on the mechanical properties was investigated from the view points of both the high-temperature strength and low temperature ductility. Y addition was suggested to moderate the hardening and embrittlement induced by oxygen impurity sustaining the high-temperature strength within an acceptable level.
AB - In order to improve irradiation embrittlement of vanadium alloys for fusion reactors, yttrium (Y) has been added reducing the interstitial oxygen impurity. However Y addition can also degrade high-temperature strength, because Y could scavenge oxygen in solid solution, which is a strong hardening agent in vanadium alloys. In this study, the effect of Y addition and oxygen level on the mechanical properties was investigated from the view points of both the high-temperature strength and low temperature ductility. Y addition was suggested to moderate the hardening and embrittlement induced by oxygen impurity sustaining the high-temperature strength within an acceptable level.
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U2 - 10.13182/FST11-A12390
DO - 10.13182/FST11-A12390
M3 - Article
AN - SCOPUS:84886381769
VL - 60
SP - 407
EP - 411
JO - Fusion Science and Technology
JF - Fusion Science and Technology
SN - 1536-1055
IS - 1
ER -