Effect of Hydrogen Atom Permeation on Microcrack Propagation of Pipeline Steel

doi:10.11885/j.issn.1674-5086.2020.09.30.01

Abstract

Abstract: In the process of hydrogen-induced cracking of pipeline steel, hydrogen atoms enter the metal by adsorption and infiltration, and gather in micro-cracks and micro pores, and interact with defects, which greatly affects the mechanical properties of steel. In order to study the effect of hydrogen atom permeation on crack behavior of pipeline steel, molecular dynamics method is used in this paper, the ferrite-cementite microstructure of ferrite pipeline steel with defects was established firstly. Then, under uniaxial tensile load at 300 K, the effects of different hydrogen atom concentrations on crack propagation between ferrite and cementite layers were studied, and the mechanical properties curves were obtained, and the evolution characteristics of microstructure at different loading stages were observed. The results show that with the increase of hydrogen concentration, the peak stress of ferrite-cementite lamellar structure will decrease, and the higher the hydrogen concentration, the greater the decrease of peak stress. The introduction of hydrogen atoms will only change the speed of crack propagation, but will not change the direction of crack propagation. When the model enters plastic strain, a large number of dislocations and phase transitions are concentrated on the right side of the crack, which hinders the crack cracking on the right side, and the introduction of hydrogen atoms also hinders the transition from FCC phase and HCP phase to BCC phase. The research can provide theoretical reference for further exploring the micro evolution mechanism of hydrogen-induced cracking behavior of pipeline steel.

Key words: pipeline steel, molecular dynamics, penetration of hydrogen atoms, ferrite-cementite lamellae, crack propagation

CLC Number:

TE242.9

XU Taolong, HE Gongzhen, ZHANG Yi, FENG Wei, WANG Wei. Effect of Hydrogen Atom Permeation on Microcrack Propagation of Pipeline Steel[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2021, 43(6): 54-61.

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References

[1] 尹成先. X70管线钢氢致开裂及应力腐蚀行为研究[D]. 西安:西安建筑科技大学, 2003. YIN Chengxian. Study on the Behaviors of X70 Pipeline in H2S Circumstance[D]. Xi'an:Xi'an University of Architecture And Technology, 2003.
[2] 王炳英, 霍立兴, 王东坡, 等. X80管线钢在近中性pH溶液中的应力腐蚀开裂[J]. 天津大学学报, 2007, 6:757-760. doi:10.3969/j.issn.0493-2137.2007.06.024 WANG Bingying, HUO Lixing, WANG Dongpo, et al. Stress corrosion cracking of X80 pipeline steel in nearneutral pH values solutions[J]. Journal of Tianjin University, 2007, 6:757-760. doi:10.3969/j.issn.0493-2137.2007.06.024
[3] 方丙炎, 韩恩厚, 王俭秋, 等. 应变速率对管线钢近中性pH值环境敏感开裂的影响[J]. 金属学报, 2005, 41(11):66-74. doi:10.3321/j.issn:0412-1961.2005.11.010 FANG Bingyan, HAN Enhou, WANG Jianqiu, et al. Influence of strain rate on near-neutral pH environmentally assisted cracking of pipeline steels[J]. Acta Metallurgica Sinica, 2005, 41(11):66-74. doi:10.3321/j.issn:0412-1961.2005.11.010
[4] 郭浩, 李光福, 蔡珣, 等. 外加电位对X70管线钢在近中性pH溶液中的应力腐蚀破裂的影响[J]. 中国腐蚀与防护学报, 2004, 4:17-21. doi:10.3969/j.issn.1005-4537.2004.04.004 GUO Hao, LI Guangfu, CAI Xun, et al. Effect of applied potentials on stress corrosion cracking of X70 pipeline steel in near-neutral-pH solutions[J]. Chinese Journal of Corrosion and Protection, 2004, 4:17-21. doi:10.3969/j.issn.1005-4537.2004.04.004
[5] MCENIRY E J, HICKEL T, Neugebauer J R. Hydrogen behaviour at twist 110 grain boundaries in α-Fe[J]. Philosophical Transactions of the Royal Society A Mathematical Physical & Engineering Sciences, 2017, 375(2098):20160402.
[6] SEITA M, HANSON J P, GRADECAK S, et al. The dual role of coherent twin boundaries in hydrogen embrittlement[J]. Nature Communications, 2015, 2(5):1-6. doi:10.1038/ncomms7164
[7] JOTHI S, CROFT T N, BROWN S G R, et al. Coupled macroscale-microscale model for hydrogen embrittlement in polycrystalline materials[J]. International journal of hydrogen energy, 2015, 40(6):2882-2889. doi:10.1016/j.ijhydene.2014.12.068
[8] 周国辉, 周富信, 赵雪丹, 等. 氢促进位错发射的分子动力学模拟[J]. 中国科学:技术科学, 1998, 1:3-5. ZHOU Guohui, ZHOU Fuxin, ZHAO Xuedan, et al. Molecular dynamics simulation of dislocation emission promoted by hydrogen[J]. Chinese Science:Technical Science, 1998, 1:3-5.
[9] 李忠吉, 褚武扬, 高克玮, 等. 氢促进位错发射和裂纹扩展的三维分子动力学模拟[J]. 自然科学进展, 2002, 9:107-110. doi:10.3321/j.issn:1002-008X.2002.09.020 LI Zhongji, CHU Wuyang, GAO Kewei, et al. Threedimensional molecular dynamics simulation of dislocation emission and crack propagation promoted by hydrogen[J]. Advances in Natural Science, 2002, 9:107-110. doi:10.3321/j.issn:1002-008X.2002.09.020
[10] 沈海军, 付光俊. 铝氢脆破坏微观机制的分子动力学研究[J]. 强度与环境, 2010, 37(4):22-27. doi:10.3969/j.issn.1006-3919.2010.04.004 SHEN Haijun, FU Guangjun. The MD simulation of hydrogen embrittlement fracture for aluminum[J]. Intensity and Environmen, 2010, 37(4):22-27. doi:10.3969/j.issn.1006-3919.2010.04.004
[11] 许天旱, 赵典典, 宋海洋. 氢原子对非对称Σ5晶界α-铁力学性能影响的模拟研究[J]. 原子与分子物理学报, 2019, 36(5):843-848. doi:10.3969/j.issn.1000-0364.2019.05.021 XU Tianhan, ZHAO Diandian, SONG Haiyang. Simulations on the effect of hydrogen atoms on the mechanical properties of α-iron at asymmetric Σ5 grain boundary[J]. Journal of Atomic and Molecular Physics, 2019, 36(5):843-848. doi:10.3969/j.issn.1000-0364.2019.05.021
[12] YOO J Y, 姜基凤, 周雄龙, 等. X70针状铁素体管线钢的优点暨恶劣环境下油气输送管道工业的发展[J]. 焊管, 2004, 27(2):1-11. doi:10.3969/j.issn.1001-3938.2004.02.001 YOO J Y, JIANG Jifeng, ZHOU Xionglong, et al. The advantage of spicular ferrite pipeline steel X70 the development of transmitting oil & gas pipeline industry in atrocious weather[J]. Welded Pipe, 2004, 27(2):1-11. doi:10.3969/j.issn.1001-3938.2004.02.001
[13] JIANG Y F, ZHANG B, WANG D Y, et al. Hydrogenassisted fracture features of a high strength ferrite-pearlite steel[J]. Journal of Materials Science & Technology, 2019, 35(6):1081-1087.
[14] HOWELL P R. The pearlite reaction in steels mechanisms and crystallography[J]. Materials Characterization, 1998, 40(4-5):227-260.
[15] KELLY P M, ZHANG M X. Accurate orientation relationships between ferrite and cementite in pearlite[J]. Scripta materialia, 1997, 37(12):2009-2015. doi:10.1016/S1359-6462(97)00396-5
[16] RUDA M, FARKAS D, GARCIA G. Atomistic simulations in the Fe-C system[J]. Computational Materials Science, 2009, 45(2):550-560. doi:10.1016/j.commatsci.2008.11.020
[17] ZHANG X, HICKEL T, ROGAL J, et al. Structural transformations among austenite, ferrite and cementite in Fe-C alloys:A unified theory based on ab initio simulations[J]. Acta Materialia, 2015(99):281-289. doi:10.1016/j.actamat.2015.07.075
[18] GUZIEWSKI M, COLEMAN S P, WEINBERGER C R. Atomistic investigation into the atomic structure and energetics of the ferrite-cementite interface:The bagaryatskii orientation[J]. Acta Materialia, 2016(119):184-192. doi:10.1016/j.actamat.2016.08.017
[19] GRAEME J, ACKLAND D, HEPBURN J. Metalliccovalent interatomic potential for carbon in iron[J], 2008, 78(16):165111-165115. doi:10.1103/PhysRevB.78.165115
[20] HENRIKSSON K O E, NORDLUND K. Simulations of cementite:An analytical potential for the Fe-C system[J]. Physical Review Condensed Matter, 2009, 79(14). doi:10.1103/PhysRevB.79.144107
[21] HOU M, MALERBA L. Dimensionality of interstitial cluster motion in BCC Fe[J]. 2007, 75(10):4101-4108.
[22] BHATIA M A, TSCHOPP M A, SOLANKI K N. Atomistic investigation of the role of grain boundary structure on hydrogen segregation and embrittlement in α-Fe[J]. Metallurgical and Materials Transactions, 2013, 44(3):1365-1375. doi:10.1007/s11661-012-1430-z
[23] KUOPANPORTTI P, HAYWARD E, FU C, et al. Interatomic Fe-H potential for irradiation and embrittlement simulations[J].Computational Materials Science, 2016(111):525-531. doi:10.1016/j.commatsci.2015.09.021
[24] OUDRISS A, CREUS J, BOUHATTATE J, et al. Grain size and grain-boundary effects on diffusion and trapping of hydrogen in pure nickel[J]. Acta Materialia, 2012, 60(19):6814-6828. doi:10.1016/j.actamat.2012.09.004
[25] YAMAKOV V, SAETHER E, PHILLIPS D R, et al. Molecular-dynamics simulation-based cohesive zone representation of intergranular fracture processes in aluminum[J]. Journal of Mechanics and Physics of Solids, 2006, 54(9):1899-1928. doi:org/10.1016/j.jmps.2006.03.004