基于Ω方法的T/P91耐热钢蠕变持久寿命预测
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摘要
利用Ω方法预测原始态和服役态T/P91耐热钢的蠕变持久寿命,并将其与利用等温线法和Larson-Miller参数法得到的结果进行对比。提出一种基于Ω方法的加速试验方案,该方法仅需一根试样即可快速预测给定温度和应力参数下的蠕变持久寿命。结果表明:与等温线法和Larson-Miller参数法相比,加速Ω方法的预测精度更高;对于服役态T/P91耐热钢,不同蠕变加速试验参数下得到的Ω较接近,蠕变断裂时间预测值均与试验值较吻合。
The creep rupture life of T/P91 heat-resistant steels respectively in original and service state was predicted by Ω method, and the results were compared with those obtained by isotherm method and Larson-Miller parameter method. Meanwhile, an accelerated test scheme was proposed based on Ω method, which could rapidly predict the creep rupture life with only one specimen under given temperatures and stress parameters. Results show that compared with isotherm method and Larson-Miller parameter method, the accelerated Ω method shows higher prediction accuracy. For service state T/P91 heat-resistant steels, nearly same Ω values shall be obtained in different acceleration schemes, and the predicted values of creep fracture time would be in good agreement with actual measurements.
The creep rupture life of T/P91 heat-resistant steels respectively in original and service state was predicted by Ω method, and the results were compared with those obtained by isotherm method and Larson-Miller parameter method. Meanwhile, an accelerated test scheme was proposed based on Ω method, which could rapidly predict the creep rupture life with only one specimen under given temperatures and stress parameters. Results show that compared with isotherm method and Larson-Miller parameter method, the accelerated Ω method shows higher prediction accuracy. For service state T/P91 heat-resistant steels, nearly same Ω values shall be obtained in different acceleration schemes, and the predicted values of creep fracture time would be in good agreement with actual measurements.
引文
[1] GIANFRANCESCO A D.Materials for ultra-supercritical and advanced ultra-supercritical power plants[M].London:Woodhead Publishing,2016.
[2] 西安热工研究院.发电设备状态监测与寿命管理[M].北京:中国电力出版社,2013.
[3] MASUYAMA F.History of power plants and progress in heat resistant steels[J].ISIJ International,2001,41(6):612-625.
[4] ENNIS P J,ZIELINSKA-LIPIECA,WACHTER O,et al.Microstructural stability and creep rupture strength of the martensitic steel P92 for advanced power plant[J].Acta Materialia,1997,45(12):4901-4907.
[5] MASUYAMA F.Advanced technology in creep life prediction and damage evaluation for creep strength enhanced ferritic steels[J].Materials at High Temperatures,2011,28(3):234-244.
[6] EVANS R W,WILSHIRE B.Creep of metals and alloys [M].London:The Institute of Metals,1985.
[7] WEBER J,KLENK A,RIEKE M.A new method of strength calculation and lifetime prediction of pipe bends operating in the creep range[J].International Journal of Pressure Vessels and Piping,2005,82(2):77-84.
[8] 涂善东.高温结构完整性原理[M].北京:科学出版社,2003.
[9] YANG J,HSIAO J S,FONG M,et al.The application of physically based CDM modeling in prediction of materials properties and component lifetime[J].Journal of Pressure Vessel Technology,2004,126(3):369-375.
[10] DYSON B.Use of CDM in materials modeling and component creep life prediction[J].Journal of Pressure Vessel Technology,2000,122(3):281-296.
[11] COSSO G L,SERVETTO C.Application of the Omega method (API 579-1/ASME FFS-1) to the life assessment of service exposed component and possible,further investigations on welded joints creep behavior[C]//Proceedings of the 4th International Conference on Innovative Technologies for Joining Advanced Materials.Romania:ASME,2010.
[12] IBARRA S,KONET R R.Life assessment of 1 1/4 Cr-1/2 Mo steel catalytic reformer furnace tubes using the MPC Omega method[J].Journal of Pressure Vessel Technology,1995,117(1):19-23.
[13] WILSHIRE B,SCHARNING P J.A new methodology for analysis of creep and creep fracture data for 9-12% chromium steels[J].International Materials Reviews,2008,53(2):91-104.
[14] National Institute for Material Science.NIMS creep data sheet No.D-1,creep deformation properties of 9Cr-1Mo-V-Nb steel tubes for boiler and heat exchanger[R].Japan:National Institute for Material Science,2007.
[2] 西安热工研究院.发电设备状态监测与寿命管理[M].北京:中国电力出版社,2013.
[3] MASUYAMA F.History of power plants and progress in heat resistant steels[J].ISIJ International,2001,41(6):612-625.
[4] ENNIS P J,ZIELINSKA-LIPIECA,WACHTER O,et al.Microstructural stability and creep rupture strength of the martensitic steel P92 for advanced power plant[J].Acta Materialia,1997,45(12):4901-4907.
[5] MASUYAMA F.Advanced technology in creep life prediction and damage evaluation for creep strength enhanced ferritic steels[J].Materials at High Temperatures,2011,28(3):234-244.
[6] EVANS R W,WILSHIRE B.Creep of metals and alloys [M].London:The Institute of Metals,1985.
[7] WEBER J,KLENK A,RIEKE M.A new method of strength calculation and lifetime prediction of pipe bends operating in the creep range[J].International Journal of Pressure Vessels and Piping,2005,82(2):77-84.
[8] 涂善东.高温结构完整性原理[M].北京:科学出版社,2003.
[9] YANG J,HSIAO J S,FONG M,et al.The application of physically based CDM modeling in prediction of materials properties and component lifetime[J].Journal of Pressure Vessel Technology,2004,126(3):369-375.
[10] DYSON B.Use of CDM in materials modeling and component creep life prediction[J].Journal of Pressure Vessel Technology,2000,122(3):281-296.
[11] COSSO G L,SERVETTO C.Application of the Omega method (API 579-1/ASME FFS-1) to the life assessment of service exposed component and possible,further investigations on welded joints creep behavior[C]//Proceedings of the 4th International Conference on Innovative Technologies for Joining Advanced Materials.Romania:ASME,2010.
[12] IBARRA S,KONET R R.Life assessment of 1 1/4 Cr-1/2 Mo steel catalytic reformer furnace tubes using the MPC Omega method[J].Journal of Pressure Vessel Technology,1995,117(1):19-23.
[13] WILSHIRE B,SCHARNING P J.A new methodology for analysis of creep and creep fracture data for 9-12% chromium steels[J].International Materials Reviews,2008,53(2):91-104.
[14] National Institute for Material Science.NIMS creep data sheet No.D-1,creep deformation properties of 9Cr-1Mo-V-Nb steel tubes for boiler and heat exchanger[R].Japan:National Institute for Material Science,2007.