湿H_2S及Cl~-环境下FV520B不锈钢的应力腐蚀行为研究
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摘要
采用慢应变速率拉伸试验研究了FV520B马氏体沉淀硬化不锈钢在湿H_2S、NaCl及湿H_2S+NaCl腐蚀环境下的应力腐蚀开裂敏感性,并讨论了介质浓度对应力腐蚀行为影响。结果表明:FV520B钢在湿H_2S+NaCl环境中的应力腐蚀敏感性最大,随H_2S浓度升高,FV520B钢抗拉强度和断后延伸率降低,应力腐蚀敏感性增大。FV520B钢在湿H_2S+NaCl腐蚀环境的恒位移加载应力腐蚀试验表明:湿H_2S+NaCl腐蚀介质能够显著降低FV520B钢的断裂韧性,随H_2S浓度升高,应力腐蚀临界应力强度因子KISCC减小;试样断口形貌分析表明,在湿H_2S+NaCl腐蚀介质中SCC试样断口呈准解理形貌,为氢脆型应力腐蚀开裂,Cl-具有一定的诱导促进作用。
Stress corrosion cracking( SCC) susceptibility of FV520 B martensitic precipitated hardening stainless steel exposed to aqueous hydrogen sulfide solution,sodium chloride solution and aqueous hydrogen sulfide containing with 5% sodium chloride solution were investigated by slow strain rate tensile test. The influence of hydrogen sulfide concentration was also taken into account. FV520 B stainless steel in aqueous hydrogen sulfide containing with 5% sodium chloride solution revealed a higher susceptibility to SCC than that exposed to other two mediums; the susceptibility increases with increasing of the concentration of hydrogen sulfide. Scanning electron microscopy analyses showed that the fracture of SSRT was transited from cavity fracture to brittle fracture when the concentration of H_2S increased. The constant displacement stress corrosion tests of FV520 B steel exposed to aqueous hydrogen sulfide with chloride displayed that the fracture toughness of FV520 B significantly decreased due to the influence of corrosive medium and threshold stress intensity factor( K_(ISCC)) of FV520 B decreases with the concentration of hydrogen sulfide increasing. Fracture morphology analyses showed that the fracture was characterized by quasi-cleavage and the SCC mechanism of FV520 B stainless steel exposed to aqueous hydrogen sulfide with chloride is hydrogen embrittlement( HE) type of SCC.
Stress corrosion cracking( SCC) susceptibility of FV520 B martensitic precipitated hardening stainless steel exposed to aqueous hydrogen sulfide solution,sodium chloride solution and aqueous hydrogen sulfide containing with 5% sodium chloride solution were investigated by slow strain rate tensile test. The influence of hydrogen sulfide concentration was also taken into account. FV520 B stainless steel in aqueous hydrogen sulfide containing with 5% sodium chloride solution revealed a higher susceptibility to SCC than that exposed to other two mediums; the susceptibility increases with increasing of the concentration of hydrogen sulfide. Scanning electron microscopy analyses showed that the fracture of SSRT was transited from cavity fracture to brittle fracture when the concentration of H_2S increased. The constant displacement stress corrosion tests of FV520 B steel exposed to aqueous hydrogen sulfide with chloride displayed that the fracture toughness of FV520 B significantly decreased due to the influence of corrosive medium and threshold stress intensity factor( K_(ISCC)) of FV520 B decreases with the concentration of hydrogen sulfide increasing. Fracture morphology analyses showed that the fracture was characterized by quasi-cleavage and the SCC mechanism of FV520 B stainless steel exposed to aqueous hydrogen sulfide with chloride is hydrogen embrittlement( HE) type of SCC.
引文
[1]高志杰,刘震,李丙寅,等.离心压缩机首级叶轮贯穿性断裂分析[J].设备管理与维修,2015(2):43-45.
[2]胡圣忠.富气压缩机叶轮开裂原因分析及对策[J].石油化工腐蚀与防护,2009,26(B05):63-68.
[3]CHU Qiaoling,ZHANG Min,LI Jihong.Failure analysis of impeller made of FV520B martensitic precipitated hardening stainless steel[J].Engineering Failure Analysis,2013,34:501-510.
[4]NIE Defu,CHEN Xuedong,FAN Zhichao,et al.Failure analysis of a slot-welded impeller of recycle hydrogen centrifugal compressor[J].Engineering Failure Analysis,2014,42:1-9.
[5]乔桂英,肖福仁,谭朝鑫.热处理对马氏体不锈钢Fv520(B)力学性能的影响[J].特殊钢,1998,19(06):18-20.
[6]牛靖,董俊明,付永红,等.FV520(B)钢时效组织和力学性能分析[J].热加工工艺,2006,35(4):33-36.
[7]周倩青,翟玉春.高强高韧FV520B马氏体钢的时效工艺优化[J].金属学报,2009,45(10):1249-1254.
[8]肖福仁.调整处理对FV520(B)不锈钢组织与性能的影响[J].金属热处理学报,1999,20(4):35-40.
[9]牛靖,董俊明,付永红,等.时效对FV520(B)钢组织和性能的影响[J].金属热处理,2007,32(4):30-33.
[10]樊俊铃,郭杏林,吴承伟,等.热处理对FV520B钢疲劳性能的影响[J].材料研究学报,2012,26(1):61-67.
[11]乔桂英.热处理对FV520(B)钢抗H2S应力腐蚀性能的影响[J].钢铁,1999,34(11):48-50.
[12]赵亮.FV520(B)钢不同时效温度的极化曲线和力学性能[J].热处理技术与装备,2015,36(2),35-38.
[13]周倩青,雍兴平,翟玉春.时效处理对FV520B马氏体时效钢的氢脆敏感性的影响[J].腐蚀科学与防护技术,2008,20(6):416-419.
[14]张敏,黄晓江,李继红,等.时效温度对沉淀硬化不锈钢FV520(B)组织及低温力学性能的影响[J].热加工工艺,2010(20):149-151.
[15]EFC Publications No.16,Guidelines on Materials Requirements for Carbon and Low Alloy Steels for H2SContaining Environments in Oil and Gas Production[S].Reprinted with Corrections,1998.
[16]陈学东.湿H2S及硝酸盐环境中低合金高强度钢制压力容器应力腐蚀开裂敏感性条件分析与安全保障技术研究[D].杭州:浙江大学,2004.
[17]GB/T 15970.7-2000金属和合金的腐蚀应力腐蚀试验第7部分:慢应变速率试验[S].
[18]GB/T 15960.6-2007金属和合金的腐蚀应力腐蚀试验第6部分:恒载荷或恒位移下预裂纹试样的制备与应用[S].
[19]霍立兴.焊接结构的断裂行为及评定[M].北京:机械工业出版社,2000:394-400.
[20]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.
[21]WU Qiaoguo,CHEN Xuedong,FAN Zhichao,et al.Engineering fracture assessment of FV520B steel impeller subjected to dynamic loading[J].Engineering Fracture Mechanics,2015,146:210-223.
[22]庞慧芳.17-4PH马氏体不锈钢抗应力腐蚀性能的研究[D].大连:大连理工大学,2014.
[23]Tsai W T,Chen M S.Stress corrosion cracking beheavior of 2205 duplex stainless steel in contained Na Cl Solution[J].Corrosion Science,2000,42(3):545-559.
[24]刘智勇,董超芳,李晓刚,等.硫化氢环境下两种不锈钢的应力腐蚀开裂行为[J].北京科技大学学报,2009,31(3):318-323.
[25]郝文魁,刘智勇,杜翠薇,等.35Cr Mo钢在酸性H2S环境中的应力腐蚀行为与机理[J].机械工程学报,2014,50(4):39-46.
[26]孙蛟,陈颂英,丁进,等.FV520B钢在H2S/CO2环境下的应力腐蚀[J].东北大学学报(自然科学版),2015,36(12):1790-1794.
[27]褚武扬.氢损伤和滞后断裂[M].北京:冶金工业出版社,1988:57.
[28]洪旗,陈业新.静态及动态充氢对SM490B纯净钢拉伸性能的作用[J].上海金属,2012,34(1):25-28,37.
[2]胡圣忠.富气压缩机叶轮开裂原因分析及对策[J].石油化工腐蚀与防护,2009,26(B05):63-68.
[3]CHU Qiaoling,ZHANG Min,LI Jihong.Failure analysis of impeller made of FV520B martensitic precipitated hardening stainless steel[J].Engineering Failure Analysis,2013,34:501-510.
[4]NIE Defu,CHEN Xuedong,FAN Zhichao,et al.Failure analysis of a slot-welded impeller of recycle hydrogen centrifugal compressor[J].Engineering Failure Analysis,2014,42:1-9.
[5]乔桂英,肖福仁,谭朝鑫.热处理对马氏体不锈钢Fv520(B)力学性能的影响[J].特殊钢,1998,19(06):18-20.
[6]牛靖,董俊明,付永红,等.FV520(B)钢时效组织和力学性能分析[J].热加工工艺,2006,35(4):33-36.
[7]周倩青,翟玉春.高强高韧FV520B马氏体钢的时效工艺优化[J].金属学报,2009,45(10):1249-1254.
[8]肖福仁.调整处理对FV520(B)不锈钢组织与性能的影响[J].金属热处理学报,1999,20(4):35-40.
[9]牛靖,董俊明,付永红,等.时效对FV520(B)钢组织和性能的影响[J].金属热处理,2007,32(4):30-33.
[10]樊俊铃,郭杏林,吴承伟,等.热处理对FV520B钢疲劳性能的影响[J].材料研究学报,2012,26(1):61-67.
[11]乔桂英.热处理对FV520(B)钢抗H2S应力腐蚀性能的影响[J].钢铁,1999,34(11):48-50.
[12]赵亮.FV520(B)钢不同时效温度的极化曲线和力学性能[J].热处理技术与装备,2015,36(2),35-38.
[13]周倩青,雍兴平,翟玉春.时效处理对FV520B马氏体时效钢的氢脆敏感性的影响[J].腐蚀科学与防护技术,2008,20(6):416-419.
[14]张敏,黄晓江,李继红,等.时效温度对沉淀硬化不锈钢FV520(B)组织及低温力学性能的影响[J].热加工工艺,2010(20):149-151.
[15]EFC Publications No.16,Guidelines on Materials Requirements for Carbon and Low Alloy Steels for H2SContaining Environments in Oil and Gas Production[S].Reprinted with Corrections,1998.
[16]陈学东.湿H2S及硝酸盐环境中低合金高强度钢制压力容器应力腐蚀开裂敏感性条件分析与安全保障技术研究[D].杭州:浙江大学,2004.
[17]GB/T 15970.7-2000金属和合金的腐蚀应力腐蚀试验第7部分:慢应变速率试验[S].
[18]GB/T 15960.6-2007金属和合金的腐蚀应力腐蚀试验第6部分:恒载荷或恒位移下预裂纹试样的制备与应用[S].
[19]霍立兴.焊接结构的断裂行为及评定[M].北京:机械工业出版社,2000:394-400.
[20]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.
[21]WU Qiaoguo,CHEN Xuedong,FAN Zhichao,et al.Engineering fracture assessment of FV520B steel impeller subjected to dynamic loading[J].Engineering Fracture Mechanics,2015,146:210-223.
[22]庞慧芳.17-4PH马氏体不锈钢抗应力腐蚀性能的研究[D].大连:大连理工大学,2014.
[23]Tsai W T,Chen M S.Stress corrosion cracking beheavior of 2205 duplex stainless steel in contained Na Cl Solution[J].Corrosion Science,2000,42(3):545-559.
[24]刘智勇,董超芳,李晓刚,等.硫化氢环境下两种不锈钢的应力腐蚀开裂行为[J].北京科技大学学报,2009,31(3):318-323.
[25]郝文魁,刘智勇,杜翠薇,等.35Cr Mo钢在酸性H2S环境中的应力腐蚀行为与机理[J].机械工程学报,2014,50(4):39-46.
[26]孙蛟,陈颂英,丁进,等.FV520B钢在H2S/CO2环境下的应力腐蚀[J].东北大学学报(自然科学版),2015,36(12):1790-1794.
[27]褚武扬.氢损伤和滞后断裂[M].北京:冶金工业出版社,1988:57.
[28]洪旗,陈业新.静态及动态充氢对SM490B纯净钢拉伸性能的作用[J].上海金属,2012,34(1):25-28,37.