X80管线钢及其焊缝在高温高压环境下的耐腐蚀性能
|
摘要
采用质量损失法研究了X80管线钢母材及焊缝分别在温度为90℃,压强为4 MPa,腐蚀介质为0.1 mol/L NaCl+0.4/0.5/0.6mol/L NaHCO_3溶液中浸泡48h的腐蚀速率,并结合扫描电子显微镜(SEM)和X射线衍射仪(XRD)对腐蚀产物膜的形貌和成分进行了分析。结果表明:X80钢母材及焊缝在0.1 mol/L NaCl+0.5 mol/L NaHCO_3溶液中的腐蚀速率最低,此时产生的腐蚀产物膜耐腐蚀性能最好。在该种腐蚀介质中形成的腐蚀产物膜由上、下两层膜组成,上层膜的大小分布不均且易脱落,为Fe(OH)_2;下层膜呈颗粒状分布,且均匀致密,为FeCO_3。
The corrosion rate of X80 pipeline steel and its welded joint immersed for 48 h in the temperature of 90 ℃,the pressure of 4MPa,and the corrosive medium of 0.1 mol/L NaCl + 0.4/0.5/0.6 mol/L NaHCO_3 solution was studied by mass loss method respectively,the morphology and composition of corrosion product film were analyzed combining with the scanning electron microscope( SEM) and X-ray diffraction( XRD).The results show that the corrosion rate of X80 pipeline steel and its welded joint is the lowest in 0.1 mol/L NaCl +0.5 mol/L NaHCO_3 solution,and the corrosion resistance of corrosion product film produced in this solution is the best.The corrosion product film is composed of both upper and lower membranes in this kind of corrosive medium,the size and distribution of upper membrane i.e.Fe(OH)_2are uneven and easy to fall off,and the lower membrane i.e.FeCO_3 is granular distribution,dense and uniform.
The corrosion rate of X80 pipeline steel and its welded joint immersed for 48 h in the temperature of 90 ℃,the pressure of 4MPa,and the corrosive medium of 0.1 mol/L NaCl + 0.4/0.5/0.6 mol/L NaHCO_3 solution was studied by mass loss method respectively,the morphology and composition of corrosion product film were analyzed combining with the scanning electron microscope( SEM) and X-ray diffraction( XRD).The results show that the corrosion rate of X80 pipeline steel and its welded joint is the lowest in 0.1 mol/L NaCl +0.5 mol/L NaHCO_3 solution,and the corrosion resistance of corrosion product film produced in this solution is the best.The corrosion product film is composed of both upper and lower membranes in this kind of corrosive medium,the size and distribution of upper membrane i.e.Fe(OH)_2are uneven and easy to fall off,and the lower membrane i.e.FeCO_3 is granular distribution,dense and uniform.
引文
[1]王炳英,霍立兴,张玉凤,等.X80管线钢焊接接头的硫化氢应力腐蚀试验研究[J].压力容器,2006,23(7):15-18.Wang Bingying,Huo Lixing,Zhang Yufeng,et al.H2S stress corrosion test of welded joint for X80 pipeline steel[J].Pressure Vessel Technology,2006,23(7):15-18.
[2]Zhao W,Zou Y,Matsuda K,et al.Characterization of the effect of hydrogen sulfide on the corrosion of X80 pipeline steel in saline solution[J].Corrosion Science,2016,102:455-468.
[3]周贤良,李晖榕,华小珍,等.X80管线钢埋弧焊焊接接头的组织和腐蚀性能[J].焊接学报,2011,32(1):37-40.Zhou Xianliang,Li Huirong,Hua Xiaozhen,et al.Microstructures and corrosion properties of submerged arc welded joint for X80 pipeline steel[J].Transactions of the China Welding Institution,2011,32(1):37-40.
[4]Niu J,Qi L H,Liu Y L,et al.Tempering microstructure and mechanical properties of pipeline steel X80[J].Transactions of Nonferrous Metals Society of China,2009,19(3):573-578.
[5]吴明,谢飞,陈旭,等.X80管线钢及其焊缝在库尔勒土壤环境中腐蚀行为[J].四川大学学报(工程科学版),2013,45(5):185-191.Wu Ming,Xie Fei,Chen Xu,et al.Corrosion behavior of X80 pipeline steel and its weld joint in Ku'erle soil environment[J].Journal of Sichuan University(Engineering Science Edition),2013,45(5):185-191.
[6]罗登,崔海伟,蔡庆伍,等.X80级管线钢抗氢致开裂和应力腐蚀开裂性能研究[J].物理测试,2009,27(5):11-16.Luo Deng,Cui Haiwei,Cai Qingwu,et al.Investigation of restriction on hydrogen induced cracking and stress corrosion cracking of X80pipeline steel[J].Physics Examination and Testing,2009,27(5):11-16.
[7]黄本生,樊子萌,陈浏,等.热处理对X80管线钢在模拟海水中应力腐蚀的影响[J].金属热处理,2014,39(8):109-112.Huang Bensheng,Fan Zimeng,Chen Liu,et al.Effect of heat treatment on stress corrosion of X80 pipeline steel in simulated seawater[J].Heat Treatment of Metals,2014,39(8):109-112.
[8]周建龙,李晓刚,杜翠薇,等.X80管线钢在Na HCO3溶液中的阳极电化学行为[J].金属学报,2010,46(2):251-256.Zhou Jianlong,Li Xiaogang,Du Cuiwei,et al.Anodic electrochemical behavior of X80 pipeline steel in Na HCO3solution[J].Acta Metallurgica Sinica,2010,46(2):251-256.
[9]谷琦琦,简璐,张西雷,等.HCO-3对X80钢在Na Cl溶液中腐蚀性能的影响[J].金属热处理,2015,40(8):179-182.Gu Qiqi,Jian Lu,Zhang Xilei,et al.Influence of HCO-3on corrosion resistance of X80 pipeline steel in Na Cl solution[J].Heat Treatment of Metals,2015,40(8):179-182.
[10]黄峰,曲炎淼,邓照军,等.不同组织X80钢在高p H土壤模拟溶液中的点蚀电化学行为[J].中国腐蚀与防护学报,2010,30(1):29-34.Huang Feng,Qu Yanmiao,Deng Zhaojun,et al.Pitting electrochemical behaviors of different microstructure X80 steel in high p H soil simulative solution[J].Journal of Chinese Society for Corrosion and Protection,2010,30(1):29-34.
[11]赵鹏翔,左秀荣,陈康,等.X80大变形管线钢的腐蚀行为[J].材料热处理学报,2013,34(2):221-226.Zhao Pengxiang,Zuo Xiurong,Chen Kang,et al.Corrosion behavior of X80 pipeline steel with strain-based design[J].Transactions of Materials and Heat Treatment,2013,34(2):221-226.
[12]胥聪敏,李艳,张耀享.X80管线钢在洛阳土壤中的电化学腐蚀行为研究[J].热加工工艺,2011,40(10):13-16.Xu Congmin,Li Yan,Zhang Yaoheng.Study on electrochemical corrosion behavior of X80 pipeline steel in Luoyang soil with saturated water[J].Hot Working Technology,2011,40(10):13-16.
[2]Zhao W,Zou Y,Matsuda K,et al.Characterization of the effect of hydrogen sulfide on the corrosion of X80 pipeline steel in saline solution[J].Corrosion Science,2016,102:455-468.
[3]周贤良,李晖榕,华小珍,等.X80管线钢埋弧焊焊接接头的组织和腐蚀性能[J].焊接学报,2011,32(1):37-40.Zhou Xianliang,Li Huirong,Hua Xiaozhen,et al.Microstructures and corrosion properties of submerged arc welded joint for X80 pipeline steel[J].Transactions of the China Welding Institution,2011,32(1):37-40.
[4]Niu J,Qi L H,Liu Y L,et al.Tempering microstructure and mechanical properties of pipeline steel X80[J].Transactions of Nonferrous Metals Society of China,2009,19(3):573-578.
[5]吴明,谢飞,陈旭,等.X80管线钢及其焊缝在库尔勒土壤环境中腐蚀行为[J].四川大学学报(工程科学版),2013,45(5):185-191.Wu Ming,Xie Fei,Chen Xu,et al.Corrosion behavior of X80 pipeline steel and its weld joint in Ku'erle soil environment[J].Journal of Sichuan University(Engineering Science Edition),2013,45(5):185-191.
[6]罗登,崔海伟,蔡庆伍,等.X80级管线钢抗氢致开裂和应力腐蚀开裂性能研究[J].物理测试,2009,27(5):11-16.Luo Deng,Cui Haiwei,Cai Qingwu,et al.Investigation of restriction on hydrogen induced cracking and stress corrosion cracking of X80pipeline steel[J].Physics Examination and Testing,2009,27(5):11-16.
[7]黄本生,樊子萌,陈浏,等.热处理对X80管线钢在模拟海水中应力腐蚀的影响[J].金属热处理,2014,39(8):109-112.Huang Bensheng,Fan Zimeng,Chen Liu,et al.Effect of heat treatment on stress corrosion of X80 pipeline steel in simulated seawater[J].Heat Treatment of Metals,2014,39(8):109-112.
[8]周建龙,李晓刚,杜翠薇,等.X80管线钢在Na HCO3溶液中的阳极电化学行为[J].金属学报,2010,46(2):251-256.Zhou Jianlong,Li Xiaogang,Du Cuiwei,et al.Anodic electrochemical behavior of X80 pipeline steel in Na HCO3solution[J].Acta Metallurgica Sinica,2010,46(2):251-256.
[9]谷琦琦,简璐,张西雷,等.HCO-3对X80钢在Na Cl溶液中腐蚀性能的影响[J].金属热处理,2015,40(8):179-182.Gu Qiqi,Jian Lu,Zhang Xilei,et al.Influence of HCO-3on corrosion resistance of X80 pipeline steel in Na Cl solution[J].Heat Treatment of Metals,2015,40(8):179-182.
[10]黄峰,曲炎淼,邓照军,等.不同组织X80钢在高p H土壤模拟溶液中的点蚀电化学行为[J].中国腐蚀与防护学报,2010,30(1):29-34.Huang Feng,Qu Yanmiao,Deng Zhaojun,et al.Pitting electrochemical behaviors of different microstructure X80 steel in high p H soil simulative solution[J].Journal of Chinese Society for Corrosion and Protection,2010,30(1):29-34.
[11]赵鹏翔,左秀荣,陈康,等.X80大变形管线钢的腐蚀行为[J].材料热处理学报,2013,34(2):221-226.Zhao Pengxiang,Zuo Xiurong,Chen Kang,et al.Corrosion behavior of X80 pipeline steel with strain-based design[J].Transactions of Materials and Heat Treatment,2013,34(2):221-226.
[12]胥聪敏,李艳,张耀享.X80管线钢在洛阳土壤中的电化学腐蚀行为研究[J].热加工工艺,2011,40(10):13-16.Xu Congmin,Li Yan,Zhang Yaoheng.Study on electrochemical corrosion behavior of X80 pipeline steel in Luoyang soil with saturated water[J].Hot Working Technology,2011,40(10):13-16.