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中国腐蚀与防护学报  2010, Vol. 30 Issue (2): 145-149    
  会议论文 本期目录 | 过刊浏览 |
夹杂物对X120管线钢氢致开裂的影响
镇凡1;刘静1;黄峰1;程吉浩1;李翠玲1;郭斌2;徐进桥2
1. 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室 武汉 430081
2. 武汉钢铁(集团)公司研究院武汉430080
EFFECT OF THE NONMETALLIC INCLUSIONS ON THE HIC BEHAVIOR OF X120 PIPELINE STEEL
ZHEN Fan1; LIU Jing1; HUANG Feng1; CHENG Jihao1; LI Cuiling1;GUO Bin2; XU Jinqiao2
1. Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education; Wuhan University of Science and Technology; Wuhan 430081
2. Research Academy; Wuhan Iron and Steel Group Corporation; Wuhan 430080
全文: PDF(2305 KB)  
摘要: 

研究了X120管线实验钢的抗H2S氢致裂纹敏感性。用多功能金相显微镜对X120管线实验钢非金属夹杂物进行颗粒度分析,用场发射扫描电子显微镜(SEM)及能谱仪(EDS)观察和分析裂纹形貌和裂纹内夹杂物。结果表明:X120管线实验钢氢致开裂一般都从非金属夹杂物处萌生扩展,并互相交叉连接;实验钢中B类夹杂物较D类夹杂物易于形成长条型裂纹,且B类夹杂物级别越高,其HIC敏感性越大; X120管线钢中S、Al含量越高,其夹杂物级别越高,非金属夹杂物数量越多,氢致开裂敏感性也越大。

关键词 X120管线钢夹杂物氢致开裂    
Abstract

The ever-increasing demand for petroleum and natural gas, requires high strength pipeline steels for transportation. In the transporting process, the hydrogen induced cracking (HIC) on the pipeline steels in a H2S environment is the main reason to cause corrosion problems and technical problems. For this reason, it is necessary to study the HIC phenomenon in high strength pipeline steels. The HIC sensitivity,of the experimental X120 high strength pipeline steel was tested, the nonmetallic inclusions in the X120 pipeline steel was studied by using a multifunctional microscope, and the cracks formed by HIC were analyzed by SEM and EDS. The results show that the cracks usually initiate and extend at the boundaries between nonmetallic inclusions and the base metal, and connect with each other; long cracks are more easily formed near the B type inclusions than near the D type inclusions; larger contents of the S and Al in the X120 pipeline steel, higher grade of the inclusions, and larger amount of the nonmetallic inclusions, lead to higher HIC sensitivity.

Key wordsX120 pipeline steel    nonmetallic inclusion    hydrogen induced cracking(HIC)
收稿日期: 2009-10-30     
ZTFLH: 

TG172

 
基金资助:

国家自然科学基金资助项目(50871077)

通讯作者: 刘静     E-mail: wkdliu@126.com
Corresponding author: LIU Jing     E-mail: wkdliu@126.com
作者简介: 镇凡,男,1985年生,硕士生,研究方向为金属材料的强韧化及抗腐蚀性研究

引用本文:

镇凡;刘静;黄峰;程吉浩;李翠玲;郭斌;徐进桥. 夹杂物对X120管线钢氢致开裂的影响[J]. 中国腐蚀与防护学报, 2010, 30(2): 145-149.
ZHEN Fan, LIU Jing. EFFECT OF THE NONMETALLIC INCLUSIONS ON THE HIC BEHAVIOR OF X120 PIPELINE STEEL. J Chin Soc Corr Pro, 2010, 30(2): 145-149.

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y2010/V30/I2/145

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