采用慢应变速率法SSRT(Slow Strain Rate Test)测试了在含H2S的介质中不同冷变形度条件下管线钢X70的硫化氢应力腐蚀开裂(SCCC)性能.结果表明,冷变形度是影响国产X70管线钢SSCC的重要因素之一.冷变形促进了材料局部微观缺陷内能的增加,这些缺陷所在的位置,往往是氢易被捕捉的地方,造成氢的聚集,微观变形将会促进裂纹的萌生和扩展.同时,随着冷变形度的增加,冷变形造成的位错等缺陷使强度进一步增大而韧性降低.最终氢与应力的交互作用导致X70管线钢抗SSCC性能下降.
参考文献
| [1] | 苗承武.西气东输工程及其管线管的选择[J].焊管,2000(03):26-31. |
| [2] | 潘家华.西气东输工程[J].焊管,2000(03):21-25. |
| [3] | ChuWY;WANGH L;HSIAO C M .Themechanismofslowcrackgrowthandstresscorrosioncrackinginaustensiticstainlesssteel[J].Corrosion,1984,40(09):487-492. |
| [4] | KOAYASHIY;UME K;HYODO T .Theresistanceofweldedlinepipestosulfidestresscracking[J].Corrosion Science,1987,27(10/11):1117-1135. |
| [5] | FGUTIERREZ-SOLANA;A VALIENTE;J GONZALEZ et al.Strain-basedfracturemodelforstresscorrosioncrackingoflow-alloyingsteels[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1996,27(02):291-304. |
| [6] | HHUANG;W J D SHAVO .Coldworkeffectsonsulifidestresscrackingofpipeinesteelexposedtosourenvironments[J].Corrosion Science,1993,34(01):6178. |
| [7] | 褚武扬.氢损伤和滞后断裂[M].北京:冶金工业出版社,1988:189-253. |
| [8] | NAKAYAMAQUEN;LIANG CHENGHAO;AKASHI MASATSSUNE .Repassivationmethodfordeterminingthecriticalpotentialforinitiationofstress-corrosioncracking[J].Corrosion Engineering,1996,45(05):298304. |
| [9] | STIWARI;A K RAY;A MITRA et al.Investigationonthemechanicaldegrationofasteellincpipeduetohydrogeningressduringexposuretoasimulatedsourenvironment[J].Corrosion Science,1995,37(06):885-896. |
| [10] | HHUANG;W J D SHAW .Hydrogenembittermentinteractionsincold-workedsteel[J].Corrosion,1995,51(01):31-43. |
| [11] | JERKOWITZ;F H HEUBAUM .Theroleofhydrogeninsulfidestresscrackingoflowalloysteels[J].Corrosion,1984,40(05):240-244. |
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