F690超高强钢的腐蚀疲劳裂纹扩展行为及其有限元模拟
Corrosion Fatigue Crack Growth Behavior of F690 Super High Strength Steeland Its Finite Element Simulation
摘 要
采用直流电压降法测试了F690超高强钢在模拟海水中的疲劳裂纹扩展速率，研究了应力比（0.1，0.2，0.3）和加载频率（0.15，0.30，0.60 Hz）对疲劳裂纹扩展行为的影响；采用基于能量释放率Paris法则的扩展有限元方法对腐蚀疲劳过程进行了模拟，并与试验结果进行对比。结果表明：F690钢在模拟海水中的腐蚀疲劳裂纹扩展速率随着应力比或频率的增大而减小；腐蚀疲劳断裂形式为穿晶断裂，且随着频率增加，二次裂纹的宽度变小；模拟得到F690钢的腐蚀疲劳裂纹扩展长度与试验结果相吻合，相对误差小于0.6%，说明采用该扩展有限元方法可有效模拟和预测F690钢的腐蚀疲劳裂纹扩展行为。
腐蚀疲劳
裂纹扩展速率
扩展有限元
F690 steel
corrosion fatigue
crack growth rate
extended finite element
Abstract
The fatigue crack growth rate of F690 super-high strength steel in simulated seawater was measured by direct-current voltage drop method, and the effects of stress ratio (0.1,0.2,0.3) and loading frequency (0.15,0.30,0.60 Hz) on the fatigue crack growth behavior were studied. The corrosion fatigue process was simulated by the extended finite element method based on Paris law of energy release rate, and compared with test results. The results show that the corrosion fatigue crack growth rate of F690 steel in simulated seawater decreased with increasing stress ratio or frequency. The corrosion fatigue fracture mode was transgranular fracture, and with increasing frequency, the width of secondary cracks decreased. The simulated corrosion fatigue crack growth length of F690 steel was consistent with the test results, and the relative error was less than 0.6%, indicating that the corrosion fatigue crack growth behavior of F690 steel could be effectively simulated and predicted by the extended finite element method.
中图分类号 TG172.5 DOI 10.11973/jxgccl202104013
所属栏目 物理模拟与数值模拟
基金项目 国家自然科学基金青年科学基金资助项目（51801098）；江苏省大学生创新创业训练计划项目（201911276004Z， 202011276066Y）；江苏省产学研合作项目（BY2020383）
收稿日期 2020/6/1
修改稿日期 2021/3/4
网络出版日期
作者单位点击查看
备注马颖涵(1997-),男,重庆人,硕士研究生
引用该论文: MA Yinghan,ZHANG Zhen,GUO Mengyu,ZHAO Wei,ZHANG Caiyi,HU Zhengfei,GAO Shan. Corrosion Fatigue Crack Growth Behavior of F690 Super High Strength Steeland Its Finite Element Simulation[J]. Materials for mechancial engineering, 2021, 45(4): 65～71
马颖涵,张振,郭孟雨,赵伟,张才毅,胡正飞,高珊. F690超高强钢的腐蚀疲劳裂纹扩展行为及其有限元模拟[J]. 机械工程材料, 2021, 45(4): 65～71
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参考文献
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【2】张杰,蔡庆伍,武会宾,等.快速加热回火对690 MPa级海洋工程用钢组织和性能的影响[J].金属学报,2013,49(12):1549-1557. ZHANG J, CAI Q W, WU H B, et al. Effect of tempering temperature on microstructure and property of 690 MPa grade ocean engineering steel under fast heating rate[J]. Acta Metallurgica Sinica,2013, 49(12):1549-1557.
【3】MA H C, LIU Z Y, DU C W, et al. Effect of cathodic potentials on the SCC behavior of E690 steel in simulated seawater[J]. Materials Science and Engineering:A, 2015, 642:22-31.
【4】张振,王琪,张才毅,等. 海洋工程用D36、F460和F690钢在模拟海水中的电化学腐蚀行为[J]. 机械工程材料. 2019,43(8):27-34. ZHANG Z, WANG Q, ZHANG C Y, et al. Electrochemical corrosion behaviors of D36,F460 and F690 steels for offshore engineering in simulated seawater[J]. Materials for Mechanical Engineering. 2019,43(8):27-34.
【5】王琪,张振,杨阳,等. F690海洋工程钢在大气中不同应力条件下的疲劳极限及裂纹扩展行为[J]. 机械工程材料,2020,44(9):17-23. WANG Q, ZHANG Z, YANG Y, et al. Fatigue limit and crack propagation behavior of F690 marine steel in air under different stress conditions[J]. Materials for Mechanical Engineering, 2020,44(9):17-23.
【6】MA H C, LIU Z Y, DU C W, et al. Effect of cathodic potentials on the SCC behavior of E690 steel in simulated seawater[J]. Materials Science and Engineering:A, 2015, 642:22-31.
【7】MA H C, LIU Z Y, DU C W, et al. Effect of prior austenite grain boundaries on corrosion fatigue behaviors of E690 high strength low alloy steel in simulated marine atmosphere[J]. Materials Science and Engineering:A, 2020, 773:138884.
【8】ZHAO T L, LIU Z Y, DU C W, et al. Corrosion fatigue crack initiation and initial propagation mechanism of E690 steel in simulated seawater[J]. Materials Science and Engineering:A, 2017, 708:181-192.
【9】ZHAO T L, LIU Z Y, DU C W, et al. Effects of cathodic polarization on corrosion fatigue life of E690 steel in simulated seawater[J]. International Journal of Fatigue, 2018, 110:105-114.
【10】王恒,刘肖,倪广县.应力比对E690高强钢腐蚀疲劳裂纹扩展影响的试验研究[J].热加工工艺,2019,48(10):79-82. WANG H, LIU X, NI G X. Experimental study on influence of stress ratio on corrosion fatigue crack propagation of E690 high strength steel[J]. Hot Working Technology,2019, 48(10):79-82.
【11】DU D H, CHEN K,YU L, et al. SCC crack growth rate of cold worked 316L stainless steel in PWR environment[J]. Journal of Nuclear Materials, 2015, 456:228-234.
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