Fracture toughness of low activation ferritic steel (JLF-1) weld joint at room temperature

被引：36

作者：

Nishimura, A ^{[1
]}

Inoue, N ^{[1
]}

Muroga, T ^{[1
]}

机构：

[1] Natl Inst Fus Sci, Gifu 50952, Japan

来源：

JOURNAL OF NUCLEAR MATERIALS | 1998年 / 258卷

关键词：

D O I：

10.1016/S0022-3115(98)00172-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A low activation ferritic steel has been developed for a candidate of a structural material of nuclear fusion reactors. Since welding must be performed when the support structures are constructed, fracture toughness of the weld joint has to be characterized as well as the base metal in an engineering sense. In this report, 25 mm thick plates of JLF-1, which contains 9% Cr and 2% W, are butt-welded by a tungsten inert gas (TIG) procedure, and the fracture toughness of the base plate and the weld metal is investigated at room temperature using 1T and 0.5T CT specimens. The base metal reveals high fracture toughness of about 430 kJ/m(2). However, the weld metal showed unstable big pop-ins. One sample fractured in a nearly elastic condition and another sample showed a toughness of over 400 kJ/m(2). (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：1242 / 1247

页数：6

共 5 条

[1]

American Society for Testing and Materials-ASTM, 1991, ANN BOOK ASTM

[2] R-AND-D OF LOW-ACTIVATION FERRITIC STEELS FOR FUSION IN JAPANESE UNIVERSITIES [J].