Moderation of negative oxygen effects by small yttrium addition to low activation vanadium alloys

Takeshi Miyazawa; Takuya Nagasaka; Yoshimitsu Hishinuma; Takeo Muroga; Yanfen Li

doi:10.13182/FST11-A12390

Moderation of negative oxygen effects by small yttrium addition to low activation vanadium alloys

Takeshi Miyazawa, Takuya Nagasaka, Yoshimitsu Hishinuma, Takeo Muroga, Yanfen Li

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	407-411
Number of pages	5
Journal	Fusion Science and Technology
Volume	60
Issue number	1
DOIs	https://doi.org/10.13182/FST11-A12390
Publication status	Published - 2011 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Civil and Structural Engineering
Nuclear and High Energy Physics
Nuclear Energy and Engineering
Materials Science(all)
Mechanical Engineering

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AU - Muroga, Takeo

AU - Li, Yanfen

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