落锤撕裂试验的发展及其在评价材料韧断止裂性能中的应用
Development of Drop-weight Tearing Test and Its Application in Evaluation of Material Resistance to Ductile Fracture
摘 要
综述了按GB/T 8363 与 API RP 5L3等标准所执行的铁素体钢落锤撕裂试验(DWTT)技术的发展概况及其在评价高强度、高韧性金属材料动态断裂性能,特别是在韧断止裂性能中的应用,如高等级管线钢、压力容器用钢以及高止裂性能船板用钢等.具体而言,第一代DWTT试验机具有较高打击能量冲断试样暴露断裂面,仅用于评价设定温度断口剪切面积分数pSA指标;第二代试验机可实测试样的DWTT吸收能,是夏比冲击技术在大尺寸试样与实物性能评测中的重要拓展;第三代试验机具备仪器化测力分析功能,可结合弹塑性断裂力学原理开展动态断裂性能评价,特别是评估管线钢的临界裂纹尖端张开角度指标,即ψCTOA,c.
管线钢
韧断止裂性能
裂纹尖端张开角度
drop-weight tearing test
pipeline steel
resistance to ductile fracture
crack tip openning angle
Abstract
The technical development of drop-weight tearing test (DWTT),complying with the standards of GB/T 8363 and API RP 5L3 etc.was reviewed,together with the introduction of its application in evaluation of the dynamic fracture toughness,especially the material resistance to ductile fracture for high strength and high toughness materials like high-grade pipeline steels,pressure vessel steels and ship steels with excellent crack arrest performance.In summary,The first generation DWTT machine with high impact energy is capable of breaking the specimen to rate the percentage of shear area (pSA) on the fracture surface.The second generation machine is able to measure the DWTT energy absorbed by the DWTT speciemen,as an alternative to the conventional Charpy impact,when dealing with the large-scale or real-size samples.The third generation machine is equipped with the instrumented impact functionality for further analysis on the dynamic fracture toughness of materials,on the basis of elastic-plastic fracture mechanics,especially providing a way to estimate the critical crack tip openning angle (ψCTOA,c) for pipeline steels.
中图分类号 TG115.5 DOI 10.11973/lhjy-wl201506002
所属栏目 专题报道(疲劳试验和断裂试验)
基金项目
收稿日期 2015/2/3
修改稿日期
网络出版日期
作者单位点击查看
备注方健(1979-),男,高级工程师,博士研究生.
引用该论文: FANG Jian. Development of Drop-weight Tearing Test and Its Application in Evaluation of Material Resistance to Ductile Fracture[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2015, 51(6): 381～387
方健. 落锤撕裂试验的发展及其在评价材料韧断止裂性能中的应用[J]. 理化检验－物理分册, 2015, 51(6): 381～387
被引情况:
【1】刘冬,李荣锋,余立,薛欢,杜丽影, "MTS软件中J积分测试存在的几个问题及建议",理化检验－物理分册 51, 535-538(2015)
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参考文献
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【2】TYSON W R.Fracture control for northern pipelines[C]//BOUKHAROUBA S.Damage and Fracture Mechanics: Failure Analysis of Engineering Materials and Structures.［S.l.］:Springer Science,2009:237-244.
【3】ISO 3183: 2012Petroleum and natural gas industries-Steel pipe for pipeline transportation systems[S].
【4】DEMOFONTI G,MANNUCCI G,ROOVERS P.Existing methods for the evaluation of material fracture resistance for high grade steel pipelines[C]//Proceedings of the PRCI-EPRG-APRA 16th Biennial Joint Technical Meeting on Pipeline Research.Australia:［s.n.］,2007:1-20.
【5】陈宏达,霍春勇,冯耀荣,等.管线钢落锤撕裂试验方法的建立、应用及发展[J].钢铁研究学报,2005,17(6):1-5.
【6】孙宏.浅谈落锤撕裂试验的方法与设备[J].理化检验-物理分册,2002,38(2):70-71.
【7】孙胜英.X80级管线钢落锤撕裂试验及其断口分析[J].理化检验-物理分册,2011,47(5):282-284.
【8】杨政,冯耀荣,陈宏达,等.高性能管线钢DWTT试样异常断口分析[J].焊管,2006,29(4):25-30.
【9】MARTINELLI A,VENZI S.Tearing modulus,J-integral,CTOA and crack profile shape obtained from the load-displacement curve only [J].Engineering Fracture Mechanics,1996,53:263-277.
【10】O′DONOGHUE P E,KANNINEN M F,LEUNG C P,et al.The development and validation of a dyna-mic fracture propagation model for gas transmission pipelines[J].International Journal of Pressure Ve-ssels and Piping,1997,70:11-25.
【11】MANNUCCI G,HARRIS D.Fracture properties of API X100 pipeline steels[R].［S.l.］: EUR 20330 EN,European Communities,2002.
【12】张从会,杨政,董明海.X70级管线钢不同缺口形式的落锤撕裂试验研究[J].焊管,2005,28(6):21-24.
【13】WILKOWSKI G M,MAXEY W A,EIBER R J.Ductile fracture propagation resistance of rising shelf controlled rolled steels[C]//ASM Symposium on What Does Charpy Energy Really Mean.Denver:［s.n.］,1978:1-9.
【14】DI BIAGIO M,FONZO A,MANNUCCI G,et al.Ductile fracture propagation resistance for advanced pipeline design[R].［S.l.］: Gas Research Institute,2005.
【15】DEMOFONTI G,BUZZICHELLI G,VENZI S,et al.Step by step procedure for the two specimen CTOA test[C]//DENYS R.Proceedings of the Second International Pipeline Technology Conference,Pipeline Technology.Ostend,Belgium: Elsevier Science,1995:503-512.
【16】XU S,BOUCHARD R,TYSON W R.Flow behaviour and ductile fracture toughness of a high toughness steel[C]//Conference Proceeding of the 5th International Pipeline Conference,IPC 2004.Calgary,Alberta,Canada: ASME,2004:1-8.
【17】RUDLAND D L,WILKOWSKI G,WANG Y Y,et al.Investigation into the use of a single specimen for the determination of dynamic steady state propagation resistance in high toughness line-pipe steels[C]//Conference Proceeding of the 4th International Pipeline Conference,IPC 2002.Calgary,Alberta,Canada: ASME,2002:IPC2002-27029.
【18】RUDLAND D L,WILKOWSKI G M,FENG Z,et al.Experimental investigation of CTOA in linepipe steels[J].Engineering Fracture Mechanics,2003,70:567-577.
【19】XU S,BOUCHARD R,TYSON W R.Simplified single-specimen method for evaluating CTOA[J].Engineering Fracture Mechanics,2007,74:2459-2464.(下转第393页)
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