异种高强钢气保焊焊接接头的氢脆敏感性
|
摘要
利用氢渗透试验、电化学测试、慢应变拉伸试验(SSRT)研究了异种高强钢气保焊焊接接头在海水中的氢渗透行为及应力腐蚀敏感性,并结合扫描电镜对断口形貌进行了观察。结果表明:异种钢焊接接头各区域的耐蚀性能和氢渗透特性存在明显差别,A侧热影响区的耐蚀性能最差并有明显的析氢倾向;充氢后焊接接头的腐蚀倾向和析氢倾向加剧,自腐蚀电位发生负移,析氢电位正移;不同阴极极化电位拉伸下,异种钢焊接接头的抗拉强度和规定塑性延伸强度都分别在830 MPa和760 MPa左右,介于基体A和基体B之间,断裂位置均在A侧热影响区,表明A侧热影响区是焊接接头产生氢脆断裂的危险区域,当阴极极化电位负于-950 mV时,焊接接头出现明显的氢脆特征。
Hydrogen permeation behavior and stress corrosion sensitivity of dissimilar high strength steel gas shielded welded joints in sea water were studied by hydrogen permeation test,electrochemical test and slow strain tensile test( SSRT),the fracture morphology was observed by SEM. The results show that there is a significant difference in the corrosion resistance and hydrogen permeation characteristics of dissimilar steel welded joints,the corrosion resistance of A side HAZ is the worst and has obvious hydrogen evolution tendency. Corrosion tendency and hydrogen evolution tendency of welded joint are strengthened after hydrogen charging,self-corrosion potential negatively shifted and hydrogen evolution potential positively shifted. The tensile strength and proof strength plastic elongation of dissimilar steel welded joints are respectively in 830 MPa and 760 MPa at different cathodic polarization potential,which is between A and B,and the fracture location is in the A side HAZ,which shows that the A side of the HAZ is dangerous area of hydrogen embrittlement fracture of welded joints,when the cathodic polarization potential to lower than-950 mV,the weld joint shows obvious hydrogen embrittlement characteristics.
Hydrogen permeation behavior and stress corrosion sensitivity of dissimilar high strength steel gas shielded welded joints in sea water were studied by hydrogen permeation test,electrochemical test and slow strain tensile test( SSRT),the fracture morphology was observed by SEM. The results show that there is a significant difference in the corrosion resistance and hydrogen permeation characteristics of dissimilar steel welded joints,the corrosion resistance of A side HAZ is the worst and has obvious hydrogen evolution tendency. Corrosion tendency and hydrogen evolution tendency of welded joint are strengthened after hydrogen charging,self-corrosion potential negatively shifted and hydrogen evolution potential positively shifted. The tensile strength and proof strength plastic elongation of dissimilar steel welded joints are respectively in 830 MPa and 760 MPa at different cathodic polarization potential,which is between A and B,and the fracture location is in the A side HAZ,which shows that the A side of the HAZ is dangerous area of hydrogen embrittlement fracture of welded joints,when the cathodic polarization potential to lower than-950 mV,the weld joint shows obvious hydrogen embrittlement characteristics.
引文
[1]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,2011,25(23):118-121.Huang Bensheng,Huang Longpeng,Li Hui.Research status and development trend of dissimilar metals welding[J].Materials Review,2011,25(23):118-121.
[2]王斌,朱加祥,周翠,等.5052与6061异种铝合金搅拌摩擦焊接头的组织和力学性能[J].金属热处理,2015,40(1):55-59.Wang Bin,Zhu Jiaxiang,Zhou Cui,et al.Microstructure and mechanical properties of 5052-6061 dissimilar Al alloy welded joint by friction stir welding[J].Heat Treatment of Metals,2015,40(1):55-59.
[3]杨江,王斌,王维,等.Q345/IN825复合板焊接接头组织与性能[J].材料热处理学报,2016,37(1):150-156.Yang Jiang,Wang Bin,Wang Wei,et al.Microstructure and mechanical properties of welding joints of Q345/IN825 composite plates[J].Transaction of Materials and Heat Treatment,2016,37(1):150-156.
[4]Hardie D,Charles E A,Lopez A H.Hydrogen embrittlement of high strength pipeline steels[J].Corrosion Science,2006,48(12):4378-4385.
[5]Lindley C,Rudd W J.Influence of the level of cathodic protection on the corrosion fatigue properties of high strength welded joints[J].Marine Structures,2001,14(4):397-416.
[6]Batt C,Ddodson J,Robinson M J.Hydrogen embrittlement of cathodically protected high strength steel in sea water and seabed sediment[J].British Corrosion Journal,2002,37(3):194-198.
[7]陈钢,王莉萍.不同管线钢在电化学充氢状态下的断裂性能[J].金属热处理,2014,39(7):47-49.Chen Gang,Wang Liping.Fracture property of different pipeline steels at electrochemical hydrogen charging state[J].Heat Treatment of Metals,2014,39(7):47-49.
[8]张体明,赵卫民,郭望,等.阴极保护下X65钢在模拟海水中的氢脆敏感性研究[J].中国腐蚀与防护学报,2014(4):315-320.Zhang Timing,Zhao Weimin,Guo Wang,et al.Susceptibility to hydrogen embrittlement of X65 steel under cathodic protection in artificial sea water[J].Journal of Chinese Society for Corrosion and Protection,2014(4):315-20.
[9]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.Liu Yu,Li Yan,Li Qiang.Effect of cathodic polarization on hydrogen embrittlement susceptibility of X80 pipeline steel in simulated deep sea environment[J].Acta Metallurgica Sinica,2013,49(9):1089-1097.
[10]原佳强,王莉萍.不同电化学充氢状态下X70和X80管线钢的断裂特性[J].金属热处理,2015,40(12):56-58.Yuan Jiaqiang,Wang Liping.Fracture characteristics of X70 and X80pipeline steels under different electrochemical hydrogen charging state[J].Heat Treatment of Metals,2015,40(12):56-58.
[11]张颖瑞,董超芳,李晓刚,等.电化学充氢条件下X70管线钢及其焊缝的氢致开裂行为[J].金属学报,2006,42(5):521-527.Zhang Yingrui,Dong Chaofang,Li Xiaogang,et al.Hydrogen induce dcracking behaviors of X70 pipeline steel and its welds under electrochemical charging[J].Acta Metallurgica Sinica,2006,42(5):521-527.
[12]Zhang D L,Li Y.Hydrogen permeation characterization of hot-dip galvanized steel in simulated marine atmospheric environment[J].Advanced Materials Research,2009,79-82:1051-1054.
[13]Zhang T M,Zhao W M,Guo W,et al.Hydrogen permeation behavior through hsla steels and its implications on hydrogen embrittlement susceptibility[J].Applied Mechanics and Materials,2013,302:310-316.
[14]张舒婷,周友龙,李雄兵,等.900 MPa钢与Q345B异种钢焊接接头的组织与力学性能分析[J].电焊机,2015,45(9):107-109.Zhang Shuting,Zhou Youlong,Li Xiongbing,et al.Analysis on microstructure and mechanical properties of the welded joints on 900MPa and Q345C dissimilar steels[J].Electric Welding Machine,2015,45(9):107-109.
[15]ISO 17081.Method of measurement of hydrogen permeation and determination of hydrogen uptake and transport in metals by an electrochemical technique[S].2004.
[16]Liu Q,Atrens A D,Shi Z,et al.Determination of the hydrogen fugacity during electrolytic charging of steel[J].Corrosion Science,2014,87(5):239-258.
[17]Perng T P,Altstetter C J.Effects of deformation on hydrogen permeation in austenitic stainless steels[J].Acta Metallurgica,1986,34(9):1771-1781.
[18]杨丽颖,杨立清,解文昌,等.异种金属焊接接头微观组织的研究进展[J].材料研究与应用,2012,6(1):1-4.Yang Liying,Yang Liqing,Xie Wenchang,et al.Research process of microstructure of dissimilar metal welding joint[J].Materials Research and Application,2012,6(1):1-4.
[19]Gajek A,Wolarek Z,Zakroczymski T.Behaviour of hydrogen in gas nitrided iron studied by electrochenucal permeation and desorption techniques[J].Corrosion Science,2012,58:260-266.
[20]郑传波,唐祝君,申小兰.微观组织对2205双相不锈钢氢脆敏感性的影响[J].金属热处理,2015,40(9):39-44.Zheng Chuanbo,Tang Zhujun,Shen Xiaolan.Effect of microstructure on hydrogen embrittlement of 2205 duplex stainless steel[J].Heat Treatment of Metals,2015,40(9):39-44.
[21]Maier H J,Popp W,Kaesche H.Effects of hydrogen on ductile fracture of a spheroidized low alloy steel[J].Materials Science and Engineering A,1995,191(1):17-26.
[22]Kim S J,Okido M,Moon K M.An electrochemical study of cathodic protection of steel used for marine structures[J].Korean Journal of Chemical Engineering,2003,20(3):560-565.
[23]储武扬,乔利杰,陈奇志,等.断裂与环境断裂[M].北京:科学出版社,2000:133.Zhu Wuyang,Qiao Lijie,Chen Qizhi,et al.Fracture and Environmental Fracture[M].Beijing:Science Press,2000:133.
[24]谭文志,杜元龙,傅超.阴极保护导致ZC-120钢在海水中环境氢脆[J].材料保护,1988,21(3):10-13.Tan Wenzhi,Du Yuanlong,Fu Chao.Environmental embrittlement of Zc-120 steel in sea water induced by cathodic protection[J].Materials Protection,1998,21(3):10-13.
[2]王斌,朱加祥,周翠,等.5052与6061异种铝合金搅拌摩擦焊接头的组织和力学性能[J].金属热处理,2015,40(1):55-59.Wang Bin,Zhu Jiaxiang,Zhou Cui,et al.Microstructure and mechanical properties of 5052-6061 dissimilar Al alloy welded joint by friction stir welding[J].Heat Treatment of Metals,2015,40(1):55-59.
[3]杨江,王斌,王维,等.Q345/IN825复合板焊接接头组织与性能[J].材料热处理学报,2016,37(1):150-156.Yang Jiang,Wang Bin,Wang Wei,et al.Microstructure and mechanical properties of welding joints of Q345/IN825 composite plates[J].Transaction of Materials and Heat Treatment,2016,37(1):150-156.
[4]Hardie D,Charles E A,Lopez A H.Hydrogen embrittlement of high strength pipeline steels[J].Corrosion Science,2006,48(12):4378-4385.
[5]Lindley C,Rudd W J.Influence of the level of cathodic protection on the corrosion fatigue properties of high strength welded joints[J].Marine Structures,2001,14(4):397-416.
[6]Batt C,Ddodson J,Robinson M J.Hydrogen embrittlement of cathodically protected high strength steel in sea water and seabed sediment[J].British Corrosion Journal,2002,37(3):194-198.
[7]陈钢,王莉萍.不同管线钢在电化学充氢状态下的断裂性能[J].金属热处理,2014,39(7):47-49.Chen Gang,Wang Liping.Fracture property of different pipeline steels at electrochemical hydrogen charging state[J].Heat Treatment of Metals,2014,39(7):47-49.
[8]张体明,赵卫民,郭望,等.阴极保护下X65钢在模拟海水中的氢脆敏感性研究[J].中国腐蚀与防护学报,2014(4):315-320.Zhang Timing,Zhao Weimin,Guo Wang,et al.Susceptibility to hydrogen embrittlement of X65 steel under cathodic protection in artificial sea water[J].Journal of Chinese Society for Corrosion and Protection,2014(4):315-20.
[9]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.Liu Yu,Li Yan,Li Qiang.Effect of cathodic polarization on hydrogen embrittlement susceptibility of X80 pipeline steel in simulated deep sea environment[J].Acta Metallurgica Sinica,2013,49(9):1089-1097.
[10]原佳强,王莉萍.不同电化学充氢状态下X70和X80管线钢的断裂特性[J].金属热处理,2015,40(12):56-58.Yuan Jiaqiang,Wang Liping.Fracture characteristics of X70 and X80pipeline steels under different electrochemical hydrogen charging state[J].Heat Treatment of Metals,2015,40(12):56-58.
[11]张颖瑞,董超芳,李晓刚,等.电化学充氢条件下X70管线钢及其焊缝的氢致开裂行为[J].金属学报,2006,42(5):521-527.Zhang Yingrui,Dong Chaofang,Li Xiaogang,et al.Hydrogen induce dcracking behaviors of X70 pipeline steel and its welds under electrochemical charging[J].Acta Metallurgica Sinica,2006,42(5):521-527.
[12]Zhang D L,Li Y.Hydrogen permeation characterization of hot-dip galvanized steel in simulated marine atmospheric environment[J].Advanced Materials Research,2009,79-82:1051-1054.
[13]Zhang T M,Zhao W M,Guo W,et al.Hydrogen permeation behavior through hsla steels and its implications on hydrogen embrittlement susceptibility[J].Applied Mechanics and Materials,2013,302:310-316.
[14]张舒婷,周友龙,李雄兵,等.900 MPa钢与Q345B异种钢焊接接头的组织与力学性能分析[J].电焊机,2015,45(9):107-109.Zhang Shuting,Zhou Youlong,Li Xiongbing,et al.Analysis on microstructure and mechanical properties of the welded joints on 900MPa and Q345C dissimilar steels[J].Electric Welding Machine,2015,45(9):107-109.
[15]ISO 17081.Method of measurement of hydrogen permeation and determination of hydrogen uptake and transport in metals by an electrochemical technique[S].2004.
[16]Liu Q,Atrens A D,Shi Z,et al.Determination of the hydrogen fugacity during electrolytic charging of steel[J].Corrosion Science,2014,87(5):239-258.
[17]Perng T P,Altstetter C J.Effects of deformation on hydrogen permeation in austenitic stainless steels[J].Acta Metallurgica,1986,34(9):1771-1781.
[18]杨丽颖,杨立清,解文昌,等.异种金属焊接接头微观组织的研究进展[J].材料研究与应用,2012,6(1):1-4.Yang Liying,Yang Liqing,Xie Wenchang,et al.Research process of microstructure of dissimilar metal welding joint[J].Materials Research and Application,2012,6(1):1-4.
[19]Gajek A,Wolarek Z,Zakroczymski T.Behaviour of hydrogen in gas nitrided iron studied by electrochenucal permeation and desorption techniques[J].Corrosion Science,2012,58:260-266.
[20]郑传波,唐祝君,申小兰.微观组织对2205双相不锈钢氢脆敏感性的影响[J].金属热处理,2015,40(9):39-44.Zheng Chuanbo,Tang Zhujun,Shen Xiaolan.Effect of microstructure on hydrogen embrittlement of 2205 duplex stainless steel[J].Heat Treatment of Metals,2015,40(9):39-44.
[21]Maier H J,Popp W,Kaesche H.Effects of hydrogen on ductile fracture of a spheroidized low alloy steel[J].Materials Science and Engineering A,1995,191(1):17-26.
[22]Kim S J,Okido M,Moon K M.An electrochemical study of cathodic protection of steel used for marine structures[J].Korean Journal of Chemical Engineering,2003,20(3):560-565.
[23]储武扬,乔利杰,陈奇志,等.断裂与环境断裂[M].北京:科学出版社,2000:133.Zhu Wuyang,Qiao Lijie,Chen Qizhi,et al.Fracture and Environmental Fracture[M].Beijing:Science Press,2000:133.
[24]谭文志,杜元龙,傅超.阴极保护导致ZC-120钢在海水中环境氢脆[J].材料保护,1988,21(3):10-13.Tan Wenzhi,Du Yuanlong,Fu Chao.Environmental embrittlement of Zc-120 steel in sea water induced by cathodic protection[J].Materials Protection,1998,21(3):10-13.