Influence of inclusions on initiation of pitting corrosion and stress corrosion cracking of X70 steel in near-neutral pH environment

被引：176
作者：
Wang, Liwei [1 ]
Xin, Juncheng [2 ]
Cheng, Lianjun [1 ]
Zhao, Kang [1 ]
Sun, Baozhuang [3 ]
Li, Junru [1 ]
Wang, Xin [2 ]
Cui, Zhongyu [2 ]
机构：
[1] Qingdao Univ, Coll Electromech Engn, Qingdao 266071, Peoples R China
[2] Ocean Univ China, Sch Mat Sci & Engn, Qingdao 266100, Peoples R China
[3] Univ Sci & Technol Beijing, Ctr Corros & Protect, Beijing 100083, Peoples R China
来源：
CORROSION SCIENCE | 2019年 / 147卷
基金：
中国国家自然科学基金;
关键词：
low alloy steel; SEM; pitting corrosion; stress corrosion; HYDROGEN-INDUCED CRACKING; PIPELINE STEEL; STAINLESS-STEEL; NONMETALLIC INCLUSIONS; IN-SITU; METALLURGICAL FACTORS; SULFIDE INCLUSIONS; CREVICE CORROSION; GRAIN-BOUNDARY; MNS INCLUSIONS;
D O I：
10.1016/j.corsci.2018.11.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In-situ 2D and 3D microscopic technologies are used to analyze the influence of inclusions on pitting and stress corrosion cracking initiation of X70 steel in near-neutral pH solution. The chemical dissolution of complex oxide inclusions or part of them induces corrosion pits. Circular protected region forms around Ds inclusions due to dissolution of CaS. The Si-enriched inclusions remain intact, but interstice forms at the inclusion/matrix interface due to the dissolution of the matrix. Both complex oxide inclusions and Si-enriched inclusions can induce initiation of SCC micro-cracks, but most of the micro-cracks are generated inside the ferrite grains.
引用
收藏
页码：108 / 127
页数：20
相关论文
共 91 条
[1]   Sulfide stress cracking resistance of API-X100 high strength low alloy steel [J].
Al-Mansour, M. ;
Alfantazi, A. M. ;
El-boujdaini, M. .
MATERIALS & DESIGN, 2009, 30 (10) :4088-4094
[2]   The influence of microstructure on the protective properties of the corrosion product layer generated on the welded API X70 steel in chloride solution [J].
Alizadeh, Mostafa ;
Bordbar, Sajjad .
CORROSION SCIENCE, 2013, 70 :170-179
[3]  
[Anonymous], 2008, MAT HDB CONCISE DESK
[4]  
[Anonymous], 2005, E45 ASTM
[5]   Characterization of inclusions in clean steels: a review including the statistics of extremes methods [J].
Atkinson, HV ;
Shi, G .
PROGRESS IN MATERIALS SCIENCE, 2003, 48 (05) :457-520
[6]   Atom probe field ion microscope measurements of carbon segregation at an α:α grain boundary and service failures by intergranular stress corrosion cracking [J].
Atrens, A ;
Wang, JQ ;
Stiller, K ;
Andren, HO .
CORROSION SCIENCE, 2006, 48 (01) :79-92
[7]   Mechanism of MnS-mediated pit initiation and propagation in carbon steel in an anaerobic sulfidogenic media [J].
Avci, R. ;
Davis, B. H. ;
Wolfenden, M. L. ;
Beech, I. B. ;
Lucas, K. ;
Paul, D. .
CORROSION SCIENCE, 2013, 76 :267-274
[8]   THE INITIATION OF PITTING CORROSION OF STAINLESS-STEELS AT OXIDE INCLUSIONS [J].
BAKER, MA ;
CASTLE, JE .
CORROSION SCIENCE, 1992, 33 (08) :1295-1312
[9]  
BROOKSBANK D, 1969, J IRON STEEL I, V207, P474
[10]  
BROOKSBANK D, 1972, J IRON STEEL I, V210, P246
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