Laser Heat Treatment Effects on Corrosion of Grade X80 Welded Pipeline Joints

被引：0

作者：

Kong Dejun ^{[1
]}

Ye Cundong ^{[1
]}

机构：

[1] Changzhou Univ, Gehu Rd, Changzhou 213164, Jiangsu, Peoples R China

来源：

MATERIALS PERFORMANCE | 2015年 / 54卷 / 11期

关键词：

ELECTROCHEMICAL CORROSION; STRESS-CORROSION; STEEL; BEHAVIOR;

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The surfaces of welded joints on Grade X80 pipeline steel were processed with a carbon dioxide (CO2) laser, and the effects of this laser heat treatment (LHT) on electrochemical corrosion in a solution saturated with hydrogen sulfde (H2S) were analyzed with electrochemical corrosion tests. The microstructures and residual stresses of the joints were analyzed before and after LHT. The surface corrosion morphologies and chemical components of corrosion products before and after LHT were observed. The results show that the self-corrosion potentials of the welded joints increased from -670 to -600 mV; and the corrosion morphologies changed from total corrosion to local corrosion, with improved corrosion resistance.

引用

页码：56 / 60

页数：5

共 15 条

[1]

[Anonymous], 2011, TM02842011 ANSINACE

[2] Research on 40Cr steel for high-speed spinde laser transformation hardening technics [J].

He, Qiang ;

Su, Huali ;

Liu, Hongzhao ;

Ye, Jun .

Zhongguo Jiguang/Chinese Journal of Lasers, 2009, 36 (08) :2192-2196

[3] Stress Corrosion of X80 Pipeline Steel Welded Joints by Slow Strain Test in NACE H2S Solutions [J].

Kong De-jun ;

Wu Yong-zhong ;

Long Dan .

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL, 2013, 20 (01) :40-46

[4]

Li DG, 2008, ACTA METALL SIN, V44, P739

[5]

[李红英 Li Hongying], 2011, [材料热处理学报, Transactions of Materials and Heat Treatment], V32, P151

[6]

[梁平 LIANG Ping], 2008, [北京科技大学学报, Journal of University Science and Technology Beijing], V30, P735

[7] In-situ characterization of the electrochemistry of grain and grain boundary of an X70 steel in a near-neutral pH solution [J].

Liu, Z. Y. ;

Li, X. G. ;

Cheng, Y. F. .

ELECTROCHEMISTRY COMMUNICATIONS, 2010, 12 (07) :936-938

[8] Effect off deteriorated microstructures on stress corrosion cracking of X70 pipeline steel in acidic soil environment [J].

Liu, Zhiyong ;

Zhai, Guoli ;

Li, Xiaogang ;

Du, Cuiwei .

JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING, 2008, 15 (06) :707-713

[9] Finite element formulation for dynamics of planar flexible multi-beam system [J].

Liu, Zhu-Yong ;

Hong, Jia-Zhen ;

Liu, Jin-Yang .

MULTIBODY SYSTEM DYNAMICS, 2009, 22 (01) :1-26

[10]

Luo J, 2012, ACTA CHIM SINICA, V70, P1213

← 1 2 →