Impact properties of NIFS-HEAT-2 (V-4Cr-4Ti) after YAG laser welding and neutron irradiation at 563 K

被引：21

作者：

Nagasaka, T ^{[1
]}

Heo, NJ

Muroga, T

Nishimura, A

Watanabe, H

Narui, M

Shinozaki, K

机构：

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

[2] Kyushu Univ, Res Inst Appl Mech, Kasuga 8168580, Japan

[3] Tohoku Univ, Oarai Branch, Inst Mat Res, Oarai, Ibaraki 3111313, Japan

[4] Hiroshima Univ, Grad Sch Engn, Dept Mech Syst Engn, Higashihiroshima 7398527, Japan

来源：

JOURNAL OF NUCLEAR MATERIALS | 2004年 / 329卷

关键词：

D O I：

10.1016/j.jnucmat.2004.04.171

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Weld specimens of the reference low activation vanadium alloy, NIFS-HEAT-2, were irradiated up to the neutron fluence of 4.5 x 10(23) nm(-2) (0.08 dpa) at 563 K in JMTR. The weld metal showed larger irradiation hardening than that of the base metal, and the weld metal showed an embrittlement at 77 K. However, irradiation hardening at the weld metal was effectively reduced by post weld heat treatment at 873 and 1223 K. Mechanisms of irradiation hardening, and behavior of C, N and O impurities in the weld metal was discussed, based on the characterization of radiation defects. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：1539 / 1543

页数：5

共 9 条

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