采用自制的手工电弧焊焊条焊接X80管线钢,利用能谱仪和光学显微镜对X80钢焊缝进行化学成分分析和金相观察;进行硬度、拉伸和冲击实验分析焊接接头的力学性能;在含硫环境下,开展电化学实验和浸泡实验研究焊缝中Al含量对X80钢焊缝抗硫化物腐蚀性能的影响.结果表明,当药皮中Al含量在8%范围内时,随Al含量的增加,焊缝含Al量升高,焊接接头硬度和抗拉强度增大,焊缝冲击韧性和抗硫化物腐蚀性能先升高后降低,腐蚀产物膜形态存在明显的变化.
In this study,an independent development electrode was developed to weld X80 pipeline steel.Moreo-ver,the chemical composition and microstructure of welded seam was analyzed by Energy Dispersive Spectrom-eter (EDS)and Optical Microscope (OM).Hardness test,tensile test and impact test were also chosen to check the mechanical properties of welded j oints.Electrochemical experiment test and immersion test were investiga-ted to research the effect of the content of Al on resistance sulfur corrosion of the X80 pipeline steel welded seam,within the sulfur-bearing environment.The results show that,as addition of the content of Al in coating less than 8%,the content of Al in welded seam is improved and the hardness and the tensile strength are also increased,but the impact toughness and the resistance sulfur corrosion are enhanced first and then reduced,be-sides,the corrosion product film morphology changes obviously.
参考文献
| [1] | 李鹤林;吉玲康;田伟.西气东输一、二线管道工程的几项重大技术进步[J].天然气工业,2010(4):1-9. |
| [2] | KONG De-jun;WU Yong-zhong;LONG Dan.Stress Corrosion of X80 Pipeline Steel Welded Joints by Slow Strain Test in NACE H2S Solutions[J].钢铁研究学报（英文版）,2013(01):40-46. |
| [3] | Yameng Qi;Hongyun Luo;Shuqi Zheng;Changfeng Chen;Zhenguo Lv;Maoxian Xiong.Comparison of tensile and impact behavior of carbon steel in H_2S environments[J].Materials & design,2014Jun.(Jun.):234-241. |
| [4] | 王炳英;霍立兴;张玉凤;王东坡.X80管线钢焊接接头SSCC研究及数值模拟[J].焊接学报,2007(1):73-76. |
| [5] | 李红英;魏冬冬;林武;曾翠婷;宾杰.X80管线钢冲击韧性研究[J].材料热处理学报,2010(11):73-78. |
| [6] | Shirinzadeh-Dastgiri, M.;Mohammadi, J.;Behnamian, Y.;Eghlimi, A.;Mostafaei, A..Metallurgical investigations and corrosion behavior of failed weld joint in AISI 1518 low carbon steel pipeline[J].Engineering failure analysis,2015:78-96. |
| [7] | Zhao MC;Liu M;Atrens A;Shan YY;Yang K.Effect of applied stress and microstructure on sulfide stress cracking resistance of pipeline steels subject to hydrogen sulfide[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20081/2(1/2):43-47. |
| [8] | 张莉莉;张骁勇;高惠临;王锋.一种高铌X80管线钢的组织性能分析[J].材料工程,2009(5):1-5. |
| [9] | ZHOU Min;DU Linxiu;ZHAO Yanfeng;LIU Xianghua.Microstrueture Characteristics and Mechanical Properties of X80 Pipeline Steels[J].武汉理工大学学报（材料科学版）（英文版）,2012(2):252-255. |
| [10] | 陈耕耘;阳东;曾志超.X80管线钢配套焊条CHE657GX的研制[J].机械,2013(3):56-59. |
| [11] | 喇培清;孟倩;姚亮;周毛熊;魏玉鹏.Al元素对热轧316L不锈钢显微组织和力学性能的影响[J].金属学报,2013(6):739-744. |
| [12] | 谈萍;陈金妹;汤慧萍;王建永;王建;杨保军;李亚宁.FeAl系合金抗高温氧化性能研究进展[J].功能材料,2012(z1):29-32. |
| [13] | 张颖;李宁;颜家振;傅旭.Al元素对Mn-Cu基阻尼合金耐蚀性能的影响[J].功能材料,2013(z1):102-104,107. |
| [14] | 陈国庆;张秉刚;刘伟;冯吉才.铝含量对TiAl/TC4电子束焊接接头组织及性能影响[J].稀有金属材料与工程,2013(3):452-456. |
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