Environmental Effects on Electrochemical Behaviors of Materials of a Dissimilar Metal Weld Exposed to High Temperature Primary Water of PWR Nuclear Power Plants

Author:

Li Guang Fu1,Fang Ke Wei1,Xu Jun1

Affiliation:

1. Shanghai Research Institute of Materials, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, National Quality Supervision Testing Center for Metallic Materials

Abstract

The effects of environmental factors on the electrochemical behaviors of the materials 52M and 316L taken from a dissimilar metal weld exposed to high temperature primary water of pressurized water reactor (PWR) nuclear power plants were studied experimentally, mainly on the effects of impurities chloride and sulfate in water, temperature and dissolved oxygen on the polarization curves, in order to provide fundamental data for relevant research and development. The results showed that doping chloride and sulfate into the water caused the rise of the tendency to pitting and general corrosion tendencies of both materials. With the rise of temperature from 160 °C to 290 °C, the tendencies to corrosion in anodic condition increased. The rise of the dissolved oxygen led to the rises of both the corrosion potentials and also the tendencies to corrosion.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Reference10 articles.

1. S.J. Zinkle, G.S. Was. Materials challenges in nuclear energy, Acta Materials, 2013, 61: 735-758.

2. A. Jenssen, K. Norrgard, J. Lagerstrom, G. Embring, D. R. Tice, Assessment of cracking in dissimilar metal welds, Proceedings of Tenth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors, Aug. 2001,Lake Tahoe, USA , NACE International (USA), CD-ROM.

3. W. H. Bamford, J. Foster, K. R. Hsu, L. Tunon-Sanjur, A. McIlree, Alloy 182 weld crack growth and its impact on service-induced cracking in operating PWR plant piping, ibid.

4. W.H. Bamford, N. A. Palm, Service experience with Alloy 600 and associated welds in operating PWRs, including repair activities and regulatory and Code actions, Proc. of Fifteenth Int. Symp. on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors, USA: The Metallurgical Society, 2011: 1525-1536.

5. D.J. Paraventi and W.C. Moshier, Interaction of microstructure, composition, and cold work on the stress corrosion cracking of alloy 82 weld metal, ibid: 1087-1101.

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3