不同应力比下S135钻杆钢疲劳裂纹的扩展行为
Fatigue Cracks Propagation Behavior of S135 Drill Pipe Steel at Different Stress Ratios
摘 要
采用疲劳性能测试与回归分析相结合的方法, 研究了S135钻杆钢在不同应力比下的疲劳裂纹扩展行为, 获得了其在稳定扩展区和近门槛区的疲劳裂纹扩展速率表达式, 并探讨了其疲劳断裂机制。结果表明: 随着应力比R的增加, 疲劳裂纹扩展速率曲线向左上方移动, da/dN增大, ΔKth呈线性减小的趋势; 近门槛区断口为解理断裂机制, 稳定扩展区断口以疲劳条带扩展机制为主, 同时也存在解理断裂。
疲劳裂纹扩展
应力比
断口
S135 drill pipe steel
fatigue crack propogation
stress ratio
fracture
Abstract
The fatigue cracks propogation behavior of S135 drill pipe steel at different stress ratios was studied by combining fatigue properites test and data regression analysis methods, the expressions of fatigue cracks propogation rates were obtained in the steady propagation region and near-threshold region, and the fatigue fracture mechanism was discussed. The results show that the increase of stress ratio made fatigue crack propogation rate curves move to the left upper side, da/dN increase, and ΔKth decrease in linear. The fracture of near-threshold region was cleavage fracture, and that of steady propogation region was mainly fatigue strip propogation mechanism with cleavage fracture.
中图分类号 TG146.2
所属栏目 材料性能及其应用
基金项目
收稿日期 2012/8/6
修改稿日期 2013/4/1
网络出版日期
作者单位点击查看
备注雒设计(1979－), 男, 陕西礼泉人, 讲师, 博士。
引用该论文: LUO She-ji,ZHAO Kang,WANG Rong. Fatigue Cracks Propagation Behavior of S135 Drill Pipe Steel at Different Stress Ratios[J]. Materials for mechancial engineering, 2013, 37(7): 72～76
雒设计,赵康,王荣. 不同应力比下S135钻杆钢疲劳裂纹的扩展行为[J]. 机械工程材料, 2013, 37(7): 72～76
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参考文献
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【3】LShuan-lu, FENG Yao-rong, LUO Fa-qian, et al. Failure analysis of IEU drill pipe wash out[J].International Journal of Fatigue, 2005, 27(10/12): 1360-1365.
【4】李鹤林, 李平全, 冯耀荣.石油钻杆失效分析及预防[M].北京: 石油工业出版社, 1999: 18-40.
【5】高长福, 范斌, 张庆昌, 等.钻杆失效分析与可靠性探讨[J].石油工业技术监督, 2007, 11(10): 58-61.
【6】GRONDIN G Y, KULAK G L. Fatigue testing of drillpipe[J].SPE Drilling & Completion, 1994, 9(2): 95-102.
【7】BARYSHNIKOV A, CALDERONI A, LIGRONE A, et al. A new approach to the analysis of drillstring fatigue behavior [J].SPE Drilling & Completion, 1997, 12(2): 77-84.
【8】DALE B A. An experimental investigation of fatigue-crack growth in drillstring tubulars [J].SPE Drilling Engineering, 1998, 3(4): 356-362.
【9】GB/T 6398-2000.金属材料疲劳裂纹扩展速率试验方法[S].
【10】ASTM E647-08.Standard test method for measurement of fatigue crack growth rates[S].
【11】王荣.金属材料的腐蚀疲劳[M].西安: 西北工业大学出版社, 2001: 38.
【12】王荣.腐蚀疲劳裂纹扩展的断裂模型[J].中国腐蚀与防护学报, 1998, 18(2): 88-94.
【13】束德林, 陈九磅, 凤仪.工程材料力学性能[M].北京: 机械工业出版社, 2009: 106.
【14】ZHENG X L, HIRT. Fatigue crack propagation in steels[J].Engineering Fracture Mechanics, 1983, 18(5): 965-979.
【15】郑修麟.金属疲劳的定量理论[M].西安: 西北工业大学出版社, 1994.
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