采用1种自然含氢和5种电化学预充不同含量氢的1Cr17Ni2马氏体-铁素体双相不锈钢CT紧凑拉伸试样进行了室温疲劳裂纹扩展速率实验,并对断裂后的试样断口进行了宏观和SEM分析.结果表明:电化学充氢没有改变试样的稳态疲劳裂纹扩展关系,扩展速率仍符合Paris的幂率关系;随氢含量的增加,疲劳裂纹扩展速率增加;疲劳扩展断口的宏观形貌和微观形貌均与氢含量有关,自然含氢试样的裂纹前沿呈对称的弧形,断口二次裂纹较充氢试样多;随着充氢量的增加,充氢试样裂纹前沿弧线变得越来越平直,断口上二次裂纹越来越少;氢含量较高试样,边缘部位表现为沿晶断裂特征,中心部位及氢含量较低试样断口则为典型的疲劳扩展形貌,可见清晰的疲劳辉纹.
参考文献
| [1] | Barnoush A.Hydrogen Embrittlement Revisited by In Situ Electrochemical Nanoindentation[D].PhD Thesis Universitat des Soarlandes,2007.,2007. |
| [2] | Hirth J .Effect of hydrogen on the propeties of iron and steel[J].Metall Trans,1980,11 |
| [3] | 李永德,李守新,杨振国,柳洋波,戎利建,惠卫军,翁宇庆.氢对高强弹簧钢50CrV4超高周疲劳性能的影响[J].金属学报,2008(01):64-68. |
| [4] | 李晓刚,李明,董超芳,陈华.长期高温高压氢暴露对CrMo钢断裂韧性和裂纹行为的影响[J].北京科技大学学报,2002(04):418-421. |
| [5] | 陈道伦 .氢暴露对钢性能的影响[J].金属学报,1988,24 |
| [6] | 李晓刚,柯伟,乔利杰.氢蚀程度对钢疲劳断裂性能的影响[J].北京科技大学学报,1999(01):32-35. |
| [7] | Holobut P .Fatigue crack growth model for a thin steel plate containing hydrogen[J].Intemation Journal of Fatigue,2010,32 |
| [8] | Hisao M,Hiroshi N .Visualization of hydrogen diffusion in a hydrogen-enhanced fatigue crack growth in type 304 stainless steel[J].Metalurgical and Materials transactions A,2011,42 |
| [9] | 宫力,孙云焕 .1Cr17Ni2钢的热处理性能研究[J].上海汽轮机,2000,33(3):20-33.Gong L,Sun Y H.Study of heat-treatment properties for 1Cr17Ni2 stainless steel[J].Shanghai QiLunJi,2000,33(3):20-33.,2000. |
| [10] | 马自忠.奥氏体化温度对Cr17Ni2钢组织和性能的影响[J].金属热处理,1999(07):20-22. |
| [11] | 查小琴,刘军,罗利阳,等.氢对0Cr16Ni5Mo马氏体不锈钢疲劳裂纹扩展速率的影响[C].2012年海峡两岸破坏科学/材料试验学术会议论文摘要集.西安:长安大学(Chang'an University),中华大学(Chung Hua University),中国力学学会(The Chinese Society of Theoretical and Applied Mechanics),2012:34.Zha X Q,Liu J,Luo L Y,et al.Effects of hydrogen on fatigue crack propagation rate of GS-80 martensitic stainless steel【C】.The 2012 Cross Strait Failure Abstract Science/Conference Materials Testing Academic Set.Xi'an:Chang'an University,Chung hua University,The Chinese Society of Theoretical and Applied Mechanics,2012:34.,2012. |
| [12] | Kolachev B A,Sadkov V V,Bylov B B,et al .Effect of hydrogen on the fatigue strength of VT6Ch titanium alloy[J].Fiziko-Khimichna Mekhanika Materialiv(0430-6252),2000,36(4):68-72.,2000. |
| [13] | Datta P K,Strafford K N,Dowson A L.Environment/mechanical interaction processes and hydrogen embrittlement of titantium[J].Mech Corros Prop A,Key Eng Mater,1985,(A8):203-216.,1985. |
| [14] | 何晓,沈保罗 .氢对Ti-4Al-2V疲劳裂纹扩展速率的影响[J].中国有色金属学报,2003,13(4):924-928.,2003. |
| [15] | 曹名洲,杨柯,万晓景 .氢对钛合金中位错速度应力指数的影响[J].金属学报,1987,23(1):A92-A93.Cao M Z,Yang K W,WanX J.Effects of hydrogen on dislocation velocity-stress exponents of tialloys[J].Acta Metallurgica Sinica,1987,23(1):A92-A93.,1987. |
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