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Application of magnetic phenomena to analysis of stress corrosion cracking in welded part of stainless steel

被引：7
|
作者：
Takaya, S
Miya, K
机构：
[1] Univ Tokyo, Sch Engn, Nucl Engn Res Lab, Naka, Ibaraki 3191188, Japan
[2] Int Inst Univ, Bunkyo Ku, Tokyo 1130031, Japan
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2005年 / 161卷 / 1-2期
关键词：
stress corrosion cracking; magnetic nondestructive inspection method; magnetic force microscope; flux gate sensor; martensitic transformation;
D O I：
10.1016/j.jmatprotec.2004.07.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Stress corrosion cracking (SCC) failures have been reported in many nuclear power plants for the past few years. It is desirable to be able to detect SCC cracks easily and nondestructively before or just after crack initiations for maintaining the integrity of the aged plants. In this study, a new magnetic nondestructive method to detect initial SCC cracks is proposed. The materials are Inconel 600 alloy and type 304 stainless steel which are representative structural materials in nuclear power plants. The change of magnetic flux density due to SCC was measured by flux gate sensors. Moreover, magnetic microstructures near SCC cracks were revealed by magnetic force microscopy observation. The obtained results show availability of the proposed method. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：66 / 74
页数：9
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