Impurity behavior in V-4Cr-4Ti-Y alloys produced by levitation melting

被引：15

作者：

Nagasaka, Takuya

Muroga, Takeo

Hino, Takeshi

Satou, Manabu

Abe, Katsunori

Chuto, Toshinori

Iikubo, Tomohito

机构：

[1] Natl Inst Fus Sci, Gifu 5095292, Japan

[2] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 9808579, Japan

[3] Daido Bunseki Res Inc, Nagoya, Aichi 4578545, Japan

来源：

JOURNAL OF NUCLEAR MATERIALS | 2007年 / 367卷

关键词：

D O I：

10.1016/j.jnucmat.2007.03.076

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An alloy of V-4Cr-4Ti-0. 15Y was fabricated by 15 kg-scale magnetic levitation melting. The oxygen level was successfully reduced to 108 wppm by slag-out Of Y2O3 formation on the surface of the melted ingot. Y2O3 was identified as a new type of precipitate, in addition to Ti-O type and Ti-N type precipitates common in V-4Cr-4Ti alloys. Y2O3 formation is thought to reduce the amount of oxygen in solid solution state and in unstable Ti-O type precipitates. Based on the behavior of the 0 impurity, optimum fabrication processes for V-4Cr-4Ti-0.15Y alloy were suggested. (c) 2007 Published by Elsevier B.V.

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页码：823 / 828

页数：6

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