金属学报  2011, Vol. 47 Issue (11): 1434-1439    DOI: 10.3724/SP.J.1037.2011.00046

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外加电位对X80管线钢在鹰潭土壤模拟溶液中应力腐蚀行为的影响

刘智勇, 王长朋, 杜翠薇, 李晓刚

1) 北京科技大学腐蚀与防护中心, 北京 100083 2) 北京市腐蚀、磨蚀与表面技术开放实验室, 北京 100083

EFFECT OF APPLIED POTENTIALS ON STRESS CORROSION CRACKING OF X80 PIPELINE STEEL IN SIMULATED YINGTAN SOIL SOLUTION

LIU Zhiyong, WANG Changpeng, DU Cuiwei, LI Xiaogang

1) Corrosion and Protection Center, University of Science and Technology Beijing, Beijing 100083 2) Key Lab of Corrosion, Erosion and Surface Technique of Beijing, Beijing 100083

刘智勇 王长朋 杜翠薇 李晓刚. 外加电位对X80管线钢在鹰潭土壤模拟溶液中应力腐蚀行为的影响[J]. 金属学报, 2011, 47(11): 1434-1439.
, , , . EFFECT OF APPLIED POTENTIALS ON STRESS CORROSION CRACKING OF X80 PIPELINE STEEL IN SIMULATED YINGTAN SOIL SOLUTION[J]. Acta Metall Sin, 2011, 47(11): 1434-1439.

摘要 参考文献 相关文章 Metrics 全文: PDF(2767 KB)   摘要: 采用电化学动电位极化技术、慢应变速率拉伸(SSRT)实验和SEM对X80管线钢在鹰潭土壤模拟溶液中的应力腐蚀行为进行了研究. 结果表明: X80管线钢在酸性土壤环境中具有较高的SCC敏感性, 其断口模式为穿晶SCC; SCC机制随外加电位的不同而改变, 在外加电位高于-930 mV时, 其SCC机制由阳极溶解和氢致腐蚀两种电极过程控制, 呈现阳极溶解和氢脆复合机制; 当电位低于该电位时, 其SCC为氢脆机制. 随着外加阴极电位的降低, X80管线钢的SCC敏感性不断增大; 与X70钢相比, 氢脆作用在X80管线钢SCC过程中发挥了更重要的作用. 关键词 ： X80管线钢,  应力腐蚀(SCC),  外加阴极电位,  土壤环境     Abstract：Stress corrosion cracking (SCC) of X80 pipeline steel in a simulated solution of the acidic soil environments in Yingtan China was studied by means of potentiodynamic polarization curves, slow strain rate test (SSRT) and corrosion morphologies characterized by SEM. The results show that X80 pipeline steel has high SCC susceptibility in the simulated solution and the failure mode is transgranular cracking. The SCC mechanism would vary with the applied cathodic potential. When the applied potential is positive to about -930 mV, the SCC behavior is controlled by the combined effect of anodic dissolution (AD) and hydrogen embrittlement (HE), i.e. the SCC mechanism is AD+HE. However, when the applied potentials are lower than -930 mV, such as -1000 and -1200 mV,  the process of hydrogen evolution plays the dominant role in SCC occurrence, meaning that the SCC mechanism is HE under such applied potentials. Moreover, SCC susceptibility increases with decreasing applied cathodic potential. Compared with X70 pipeline steel in acidic soil environments, HE plays a more important role in affecting SCC occurrence. Key words： X80 pipeline steel    stress corrosion cracking (SCC)    applied cathodic potential    soil environment 收稿日期: 2011-01-19      ZTFLH:  TG172.4   基金资助: 国家自然科学基金项目50901041和中央高校基本科研业务费专项资金项目FRF-TP-09-029B资助 作者简介: 刘智勇, 男, 1978年生, 博士 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 王长朋 杜翠薇 刘智勇 李晓刚 44.8K 链接本文: https://www.ams.org.cn/CN/10.3724/SP.J.1037.2011.00046      或      https://www.ams.org.cn/CN/Y2011/V47/I11/1434 [1] Liu Z Y, Li X G, Du C W, Zhai G L, Cheng Y F. Corros Sci, 2008; 50: 2251 [2] Zhai G L, Liu Z Y, Du C W, Li X G, Wang L X. Corros Prot, 2009; 30: 149 (翟国丽, 刘智勇, 杜翠薇, 李晓刚, 王立贤. 腐蚀与防护, 2009; 30: 149) [3] L¨u X Y, Wang Y, Li J C. Electr Weld Machine, 2009; 39(5): 121 (吕向阳, 王义, 李景昌. 电焊机, 2009; 39(5): 121) [4] Liang P, Du C W, Li X G, Chen X, Zhang L. Int J Miner, Metall Mater, 2009; 16: 407 [5] Gu B, Luo J L, Mao X. Corrosion, 1999; 55: 96 [6] Gu B, Yu W Z, Luo J L,Mao X. Corrosion, 1999; 55: 312 [7] Wang B Y, Huo L X, Wang D P, Deng C Y. J Tianjin Univ, 2007; 40: 757 (王炳英, 霍立兴, 王东坡, 邓彩艳. 天津大学学报, 2007; 40: 757) [8] Su D L, Feng Y, Chen J B. Mechanical Properties of Engineering Materials. Beijing: China Machine Press, 2005: 1 (束德林, 凤 仪, 陈九磅. 工程材料力学性能. 北京: 机械工业出版社, 2005: 1) [9] Chu W Y, Qiao L J, Chen Q Z. Fault Rupture and the Environment. Beijing: Science Press, 2000: 109 (禇武扬, 乔利杰, 陈奇志. 断裂与环境断裂. 北京: 科学出版社, 2000: 109) [10] Ogundele G I, White W E. Corrosion, 1986; 42: 71 [11] Zhang L F. J Iron Steel Res Int, 2006; 13(3): 01 [12] Garet M, Brass A M, Haut C, Solana F G. Corros Sci, 1998; 40: 1073 [13] Parkins R N. Corros Sci, 1980; 20: 147 [14] Liu Z Y, Li X G, Du C W, Zhai G C, Cheng Y F. Corros Sci, 2008; 50: 2251 [15] Cheng Y F, Niu L. Electrochem Commun, 2007; 9: 558 [16] Chen W, Fang K, Vokes E. Corrosion, 2002; 58: 267 [17] Liu Z Y, Zhai G L, Du C W, Li X G. Acta Metall Sin, 2008; 44: 209 (刘智勇, 翟国丽, 杜翠薇, 李晓刚. 金属学报, 2008; 44: 209) [18] Liu Z Y, Li X G, Du C W, Lu L, Zhang Y R, Cheng Y F. Corros Sci, 2009; 51: 895 [1] 陈芳,李亚东,杨剑,唐晓,李焰. X80钢焊接接头在模拟天然气凝析液中的腐蚀行为[J]. 金属学报, 2020, 56(2): 137-147. [2] 张体明, 赵卫民, 蒋伟, 王永霖, 杨敏. X80钢焊接残余应力耦合接头组织不均匀下氢扩散的数值模拟[J]. 金属学报, 2019, 55(2): 258-266. [3] 苑洪钟,刘智勇,李晓刚,杜翠薇. 外加电位对X90钢及其焊缝在近中性土壤模拟溶液中应力腐蚀行为的影响[J]. 金属学报, 2017, 53(7): 797-807. [4] 万红霞,宋东东,刘智勇,杜翠薇,李晓刚. 交流电对X80钢在近中性环境中腐蚀行为的影响[J]. 金属学报, 2017, 53(5): 575-582. [5] 刘智勇,李宗书,湛小琳,皇甫文珠,杜翠薇,李晓刚. X80钢在鹰潭土壤模拟溶液中应力腐蚀裂纹扩展行为机理*[J]. 金属学报, 2016, 52(8): 965-972. [6] 张体明,王勇,赵卫民,唐秀艳,杜天海,杨敏. 高压煤制气环境下X80钢及热影响区的氢渗透参数研究[J]. 金属学报, 2015, 51(9): 1101-1110. [7] 刘玉,李焰,李强. 阴极极化对X80管线钢在模拟深海条件下氢脆敏感性的影响[J]. 金属学报, 2013, 49(9): 1089-1097. [8] 范林，刘智勇，杜翠薇，李晓刚. X80管线钢高pH应力腐蚀开裂机制与电位的关系[J]. 金属学报, 2013, 49(6): 689-698. [9] 王新华,李秀刚,李强,黄福祥,李海波,杨建. X80管线钢板中条串状CaO-Al2O3系非金属夹杂物的控制[J]. 金属学报, 2013, 49(5): 553-561. [10] 邓伟 高秀华 秦小梅 高鑫 赵德文 杜林秀. 冷却速率对变形与未变形X80管线钢组织的影响[J]. 金属学报, 2010, 46(8): 959-966. [11] 陈旭 吴明 何川 肖军. 外加电位对X80钢及其焊缝在库尔勒土壤 模拟溶液中SCC行为的影响[J]. 金属学报, 2010, 46(8): 951-958. [12] 缪成亮 尚成嘉 王学敏 张龙飞 Mani Subramanian. 高Nb X80管线钢焊接热影响区显微组织与韧性[J]. 金属学报, 2010, 46(5): 541-546. [13] 邓伟 高秀华 秦小梅 赵德文 杜林秀 王国栋. X80管线钢的冲击断裂行为[J]. 金属学报, 2010, 46(5): 533-540. [14] 周建龙 李晓刚 杜翠薇 李云玲 李涛 潘莹. X80管线钢在NaHCO3溶液中的阳极电化学行为[J]. 金属学报, 2010, 46(2): 251-256. [15] 李党国; 朱杰武; 郑茂盛; 冯耀荣; 白真权 . X80管线钢钝化膜的光电化学性能[J]. 金属学报, 2008, 44(6): 739-744 . Viewed Full text Abstract Cited   Shared      Discussed