采用焊条电弧焊(SMAW)对Q345/316L异种钢进行焊接,并对焊接接头进行不同温度的时效处理.在模拟常温高压海水环境中对不同时效处理的异种钢焊接接头开展腐蚀试验.研究时效处理对Q345/316L异种钢焊接接头耐腐蚀性能的影响.结果表明:经过450℃时效处理的异种钢焊接接头比250℃、600℃及不进行时效处理的焊接接头具有更好的耐腐蚀性能.同时经450℃的时效处理有利于焊缝奥氏体晶界处碳化物的溶解,缓解晶界的贫Cr现象,提高其耐腐蚀性能.此外,Q345/316L异种钢焊接接头在模拟海水腐蚀环境中的腐蚀产物主要是α-Fe和FeOOH.
Q345/316L dissimilar steel was welded by shielded metal arc welding(SMAW),and the aging treatment of the welded joints at different temperatures was carried out.Corrosion properties of the dissimilar steel welded joints by different aging treatments was examined by corrosion tests under simulated normal temperature and high pressure seawater environment to investigate the effect of aging treatment on the corrosion resistance of the Q345/316L dissimilar steel joints.The experimental results reveal that the dissimilar steel welded joints after aging treatment at 450 ℃ have better corrosion resistance compared with that of the welded joints aged at 250 ℃,600 ℃ and nonaging treatment.Meanwhile,the aging treatment at 450 ℃ is of great benefit to the dissolution of the carbides at austenite grain boundaries and the phenomenon of chromium depletion at grain boundaries is relieved,which can improve the resistance of corrosion.In addition,the corrosion products of the Q345/316L dissimilar steel welding joints in simulated seawater corrosion environment are mainly α-Fe and FeOOH.
参考文献
| [1] | J. Michalska;M. Sozanska.Qualitative and quantitative analysis of a and chi phases in 2205 duplex stainless steel[J].Materials Characterization,20064/5(4/5):355-362. |
| [2] | 黄本生;黄龙鹏;李慧.异种金属焊接研究现状及发展趋势[J].材料导报,2011(23):118-121. |
| [3] | Jian Cao;Yi Gong;Kai Zhu;Zhen-Guo Yang;Xiao-Ming Luo;Fu-Ming Gu.Microstructure and mechanical properties of dissimilar materials joints between T92 martensitic and S3D4H austenitic steels[J].Materials & design,20115(5):2763-2770. |
| [4] | G. Madhusudan Reddy;K. Srinivasa Rao.Microstructure and mechanical properties of similar and dissimilar stainless steel electron beam and friction welds[J].The International Journal of Advanced Manufacturing Technology,20099/10(9/10):875-888. |
| [5] | M.L.Huang L.Wang.Carbon Migration in 5Cr-0.5Mo/21Cr-12Ni Dissimilar Metal Welds[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,199812(12):3037-3046. |
| [6] | 宋有明;陈国宏;余新海;刘俊建;王家庆;化建;张涛;张建华;汤文明.T92/HR3C异种钢焊接接头高温拉伸变形及断裂行为[J].材料热处理学报,2012(2):72-78. |
| [7] | 刘俊建;陈国宏;余新海;王家庆;化建;宋有明;张涛;汤文明.T92/HR3C异种钢焊接接头的组织结构和力学性能[J].材料热处理学报,2011(2):54-60. |
| [8] | 黄本生;刘阁;刘记;刘清友.时效处理对Q235/316L异种钢焊接头组织及性能的影响[J].材料热处理学报,2013(10):139-145. |
| [9] | 黄本生;卢东华;杨逸莎;邓超.Q345/316L钢焊接接头的腐蚀性能[J].材料保护,2014(9):22-25. |
| [10] | 韩志伟 .异种金属焊接接头腐蚀行为研究[D].西华大学,2010. |
| [11] | 杨子梅;卫英慧;王宁;李永刚.AZ31B镁合金在模拟流动海水中的腐蚀行为[J].金属热处理,2015(2):107-110. |
| [12] | 史艳华;梁平;王玉安;武占文.Q235和Q345钢在模拟海水中的腐蚀行为[J].辽宁石油化工大学学报,2013(1):5-8. |
| [13] | 张金钟;谢俊峰;宋文文;廖芸;郑初;刘遇春;林普.Cl-浓度对316L不锈钢点蚀行为的影响[J].天然气与石油,2012(1):71-73. |
| [14] | 陈惠玲;陈淑慧;魏雨.3%NaCl溶液中碳钢表面Fe3O4和α-FeOOH的形成机理[J].材料保护,2007(9):20-21. |
| [15] | 聂向晖;李云龙;李记科;张鸿博.Q235碳钢在滨海盐土中的腐蚀形貌、产物及机理分析[J].材料工程,2010(8):24-28,33. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%