Energy Principle of Corrosion Environment Accelerating Crack Propagation During Anodic Dissolution Corrosion Fatigue

doi:10.1007/s12204-013-1382-5

上海交通大学学报（英文版） ›› 2013, Vol. 18 ›› Issue (2): 190-196.doi: 10.1007/s12204-013-1382-5

Energy Principle of Corrosion Environment Accelerating Crack Propagation During Anodic Dissolution Corrosion Fatigue

HUANG Xiao-guang1,2 (黄小光), XU Jin-quan1* (许金泉), FENG Miao-lin1 (冯淼林)

(1. School of Navel Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao 266580, Shandong, China)

出版日期:2013-04-30 发布日期:2013-05-10
通讯作者: XU Jin-quan (许金泉) E-mail:jqxu@sjtu.edu.cn

Energy Principle of Corrosion Environment Accelerating Crack Propagation During Anodic Dissolution Corrosion Fatigue

HUANG Xiao-guang1,2 (黄小光), XU Jin-quan1* (许金泉), FENG Miao-lin1 (冯淼林)

(1. School of Navel Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao 266580, Shandong, China)

Online:2013-04-30 Published:2013-05-10
Contact: XU Jin-quan (许金泉) E-mail:jqxu@sjtu.edu.cn

摘要/Abstract

摘要： A general method to predict the crack propagation of anodic dissolution corrosion fatigue is developed in this paper. Crack propagation of corrosion fatigue is presented as the result of the synergistic interactions of mechanical and environmental factors, and corrosive environment accelerates crack propagation mainly in term of anodic dissolution. By studying the variation of mechanical energy and electrochemical energy of anodic dissolution during the crack propagation process, an explicit expression of crack propagation rate is derived by the conservation of energy. The comparisons with experimental data demonstrate the validity of the proposed model. Moreover, the applicable upper-limit crack length for steady crack propagation is determined and the crack propagation life is evaluated.

关键词: crack propagation, corrosion fatigue, conservation of energy, anodic dissolution

Abstract: A general method to predict the crack propagation of anodic dissolution corrosion fatigue is developed in this paper. Crack propagation of corrosion fatigue is presented as the result of the synergistic interactions of mechanical and environmental factors, and corrosive environment accelerates crack propagation mainly in term of anodic dissolution. By studying the variation of mechanical energy and electrochemical energy of anodic dissolution during the crack propagation process, an explicit expression of crack propagation rate is derived by the conservation of energy. The comparisons with experimental data demonstrate the validity of the proposed model. Moreover, the applicable upper-limit crack length for steady crack propagation is determined and the crack propagation life is evaluated.

Key words: crack propagation, corrosion fatigue, conservation of energy, anodic dissolution

中图分类号:

TG 174.34

HUANG Xiao-guang1,2 (黄小光), XU Jin-quan1* (许金泉), FENG Miao-lin1 (冯淼林). Energy Principle of Corrosion Environment Accelerating Crack Propagation During Anodic Dissolution Corrosion Fatigue[J]. 上海交通大学学报（英文版）, 2013, 18(2): 190-196.

HUANG Xiao-guang1,2 (黄小光), XU Jin-quan1* (许金泉), FENG Miao-lin1 (冯淼林). Energy Principle of Corrosion Environment Accelerating Crack Propagation During Anodic Dissolution Corrosion Fatigue[J]. Journal of shanghai Jiaotong University (Science), 2013, 18(2): 190-196.

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Energy Principle of Corrosion Environment Accelerating Crack Propagation During Anodic Dissolution Corrosion Fatigue

Energy Principle of Corrosion Environment Accelerating Crack Propagation During Anodic Dissolution Corrosion Fatigue

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