对超低碳X80管线钢分别进行了正火和淬火处理，采用光学显微镜、扫描电镜、透射电镜和电子背散射衍射技术等手段，研究了显微组织对试验钢氢致开裂(HIC)行为的影响。结果表明：未经热处理的试验钢显微组织为针状铁素体，该组织的抗 HIC 性能优于正火后多边形铁素体组织和淬火后贝氏体铁素体组织的抗 HIC性能；大小角度晶界的均匀分布有利于提高试验钢的抗HIC性能，高密度的小角度晶界可以阻止氢致裂纹扩展。
Normalizing and quenching treatment were carried out on ultra-low carbon X80 pipeline steel,and then the influence of microstructures on the hydrogen-induced cracking behavior of the steel was investigated by optical microscopy, scanning electron microscopy, transmission electron microscopy and electron backscatter diffraction (EBSD)technology.The results show that the tested steel before heat treatment owned acicular ferrite structure,and its HIC resistance was better than the HIC resistance of polygonal ferrite structure after normalizing and bainite ferrite structure after quenching.The uniform distribution of high and low angle grain boundaries was of benefit to the improvement of HIC resistance of the test steel,meanwhile high density low-angle grain boundaries could prevent the extend of hydrogen induced crack.
参考文献
| [1] | D. Hardie;E.A. Charles;A.H. Lopez.Hydrogen embrittlement of high strength pipeline steels[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,200612(12):4378-4385. |
| [2] | 胡亮;陈健;汪兵;刘清友;黎振华.电化学充氢条件下夹杂物对管线钢氢致开裂敏感性的影响[J].机械工程材料,2015(9):25-31. |
| [3] | Nayak, SS;Misra, RDK;Hartmann, J;Siciliano, F;Gray, JM.Microstructure and properties of low manganese and niobium containing HIC pipeline steel[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,20081/2(1/2):456-463. |
| [4] | 尹雨群;唐春霞;赵晋斌;李强.组织特征对X70MS管线钢抗H2S腐蚀行为的影响[J].金属热处理,2013(5):32-36. |
| [5] | Ming-Chun Zhao;Yi-Ying Shan;Fu Ren Xiao.Investigation on the H_2S-resistant behaviors of acicular ferrite and ultrafine ferrite[J].Materials Letters,20021(1):141-145. |
| [6] | Gyu Tae Park;Sung Ung Koh;Hwan Gyo Jung;Kyoo Young Kim.Effect of microstructure on the hydrogen trapping efficiency and hydrogen induced cracking of linepipe steel[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,20087(7):1865-1871. |
| [7] | H.B. Xue;Y.F.Cheng.Characterization of inclusions of X80 pipeline steel and its correlation with hydrogen-induced cracking[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,20114(4):1201-1208. |
| [8] | 罗海文;董瀚.高级别管线钢X80～X120的研发与应用[J].中国冶金,2006(4):9-15. |
| [9] | Huang, F.;Liu, J.;Deng, Z.J.;Cheng, J.H.;Lu, Z.H.;Li, X.G..Effect of microstructure and inclusions on hydrogen induced cracking susceptibility and hydrogen trapping efficiency of X120 pipeline steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,201027/28(27/28):6997-7001. |
| [10] | 程吉浩;刘静;黄峰;孙宜强;邓照军.贝氏体组织管线钢的氢致开裂行为[J].腐蚀与防护,2010(11):833-836. |
| [11] | 杨静;徐烽;黄国建;武欲民;刘凤莲.影响X65管线钢抗氢致开裂性能的因素[J].机械工程材料,2011(11):94-97. |
| [12] | V. Venegas;F. Caleyo;T. Baudin;J.H. Espina-Hernandez;J.M. Hallen.On the role of crystallographic texture in mitigating hydrogen-induced cracking in pipeline steels[J].Corrosion Science,201112(12):4204-4212. |
| [13] | M.A. Arafin;J.A. Szpunar.A New Understanding Of Intergranular Stress Corrosion Cracking Resistance Of Pipeline Steel Through Grain Boundary Character And Crystallographic Texture Studies[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,20091(1):119-128. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%