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Research Papers: Codes and Standards

On Fatigue Design Curves for 2.25Cr-1Mo-V Steel Reactors at Elevated Temperature in Code Case 2605

[+] Author and Article Information
Jian-Guo Gong

School of Mechanical and Power Engineering,
East China University of
Science and Technology,
130 Meilong Road,
Shanghai 200237, China
e-mail: jggong@ecust.edu.cn

Fang Liu

School of Mechanical and Power Engineering,
East China University of
Science and Technology,
130 Meilong Road,
Shanghai 200237, China
e-mail: 1107937101@qq.com

Fu-Zhen Xuan

School of Mechanical and Power Engineering,
East China University of
Science and Technology,
130 Meilong Road,
Shanghai 200237, China
e-mail: fzxuan@ecust.edu.cn

1Corresponding author.

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received August 15, 2017; final manuscript received December 18, 2017; published online January 24, 2018. Assoc. Editor: Kiminobu Hojo.

J. Pressure Vessel Technol 140(2), 021101 (Jan 24, 2018) (10 pages) Paper No: PVT-17-1156; doi: 10.1115/1.4038903 History: Received August 15, 2017; Revised December 18, 2017

Fatigue design method for 2.25Cr-1Mo-V steel reactors in code case 2605 (CC 2605) is reviewed. Main factors such as the accelerating function of fatigue action, the cyclic frequency, the strain damage factor (β) related to the fatigue design curves are addressed, and the applicable stress level for pure creep rupture analysis in CC 2605 is also discussed. Results indicate that, for the high loading levels, the accelerating function of fatigue action and strain damage factor contribute relatively remarkably to the fatigue design curve. The increase of cyclic frequency leads to a remarkable increase of the allowable fatigue cycle number and hence reduces the conservativeness of fatigue design curve. It should be stipulated in CC 2605 that the applicable stress level is higher than a value of around 200 MPa (slightly dependent on temperature) for the adjusted uniaxial Omega damage parameter and 16 MPa for the creep strain rate when the Omega creep-damage method is employed.

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References

Gong, J. G. , and Xuan, F. Z. , 2017, “ Notch Behavior of Components Under the Stress-Controlled Creep-Fatigue Condition: Weakening or Strengthening?,” ASME J. Pressure Vessel Technol., 139(1), p. 011407. [CrossRef]
Barbera, D. , Chen, H. , Liu, Y. , and Xuan, F. Z. , 2017, “ Recent Developments of the Linear Matching Method Framework for Structural Integrity Assessment,” ASME J. Pressure Vessel Technol., 139(5), p. 051101. [CrossRef]
Coffin, L. F. , 1976, “ The Concept of Frequency Separation Methods in Life Prediction for Time-Dependent Fatigue,” ASME-MPC Symposium on Creep-Fatigue Interaction (MPC-3), pp. 346–363.
Manson, S. , Halford, G. , and Hirschberg, M. , 1971, “ Creep-Fatigue Analysis by Strain-Range Partitioning,” Symposium on Design for Elevated Temperature Environment, San Francisco, CA, May 10–12, pp. 12–28. https://ntrs.nasa.gov/search.jsp?R=19720039532
He, J. , Duan, Z. , Ning, Y. , and Zhao, D. , 1983, “ Strain Energy Partitioning and Its Application to GH33A Nickel-Base Superalloy and 1Cr-18Ni-9Ti Stainless Steel,” ASME International Conference on Advances in Life Prediction Methods, Albany, NY, Apr. 18–20, pp. 27–32.
Zhuang, W. Z. , and Swansson, N. S. , 1998, “ Thermo-Mechanical Fatigue Life Prediction: A Critical Review,” Aeronautical and Maritime Research Lab, Melbourne, Australia, Report No. DSTO-TR-0609. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.504.3406&rep=rep1&type=pdf
Prager, M. , 2009, “ Extend Low Chrome Steel Fatigue Rules,” American Society of Mechanical Engineers, New York, Standard No. STP-PT-027.
ASME, 2017, “ Cases of ASME Boiler and Pressure Vessel Code, Case 2605,” American Society of Mechanical Engineers, New York.
Panwala, M. S. M. , Desai, D. H. , and Mehta, S. L. , 2010, “ An Approach Based on Code Case 2605 for Fatigue Evaluation of Vanadium Modified Materials Reactor,” ASME Paper No. PVP2010-25720.
Terada, S. , 2013, “ Application of Code Case 2605 for Fatigue Evaluation of Vessels Made in 2.25 Cr-1Mo-0.25 V Steels Slightly Into Creep Range,” ASME J. Pressure Vessel Technol., 135(4), p. 041401. [CrossRef]
Zhao, M. , 2010, “ Coupled Creep Fatigue Analysis on 2-1/4 Cr-1Mo-V Pressure Components Per Code Case 2605,” ASME Paper No. PVP2010-25711.
Stefanovic, R. , Avery, A. , Bardia, K. , Kabganian, R. , Oprea, V. , and Seipp, T. , 2013, “ User's Design Specification Preparation for 2¼Cr-1Mo-¼V Reactors in Accordance With ASME Section VIII, Division 2 Code and Code Case 2605,” ASME Paper No. PVP2013-97720.
Terada, S. , Yamada, M. , and Nakanishi, T. , 2015, “ Proposed Code Case of Creep Fatigue Evaluation of 9Cr-1Mo-V Steels for High Pressure Vessels in ASME Section VIII Division 2,” ASME Paper No. PVP2015-45327.
Takehana, T. , Sano, T. , Terada, S. , and Kobayashi, H. , 2004, “ Proposal for the Implementation of Elevated Temperature Design Fatigue Curve for 2-1/4Cr-1Mo-V and 3Cr-1Mo-V Steels,” ASME Paper No. PVP2004-2271.
Chopra, O. K. , and Shack, W. J. , 2003, “ Review of the Margins for ASME Code Fatigue Design Curve-Effects of Surface Roughness and Material Variability,” Argonne National Laboratory (ANL), Chicago, IL, Report No. ANL-02/39. https://www.nrc.gov/reading-rm/doc-collections/nuregs/contract/cr6815/cr6815.pdf
Prager, M. , 1995, “ Development of the MPC Omega Method for Life Assessment in the Creep Range,” ASME J. Pressure Vessel Technol., 117(2), pp. 95–103. [CrossRef]
Prager, M. , 2000, “ The Omega Method-An Engineering Approach to Life Assessment,” ASME J. Pressure Vessel Technol., 122(3), pp. 273–280. [CrossRef]
API, 2007, “ Fitness-For-Service,” American Petroleum Institute, Houston, TX, Standard No. API 579-1/ASME FFS-1. http://www.asme.org/products/courses/api-5791asme-ffs1-fitness-service-evaluation
Ramberg, W. , and Osgood, W. R. , 1943, “ Description of Stress–Strain Curves by Three Parameters,” National Advisory Committee for Aeronautics, Washington, DC, Technical Note No. NACA-TN-902. https://ntrs.nasa.gov/search.jsp?R=19930081614
Endo, T. , and Sakon, T. , 1984, “ Creep-Fatigue Life Prediction Using Simple High-Temperature Low-Cycle Fatigue Testing Machines,” Met. Technol., 11(1), pp. 489–496. [CrossRef]
Tian, Y. , Yu, D. , Zhao, Z. , Chen, G. , and Chen, X. , 2016, “ Low Cycle Fatigue and Creep-Fatigue Interaction Behaviour of 2.25 Cr1MoV Steel at Elevated Temperature,” Mater. High Temp., 33(1), pp. 75–84. [CrossRef]
NIMS, 2004, “ NIMS Materials Database,” Natural Institute of Materials Science, Tsukuba, Japan.
Kobayashi, H. , Todoroki, A. , Oomura, T. , Sano, T. , and Takehana, T. , 2006, “ Ultra-High-Cycle Fatigue Properties and Fracture Mechanism of Modified 2.25Cr-1Mo Steel at Elevated Temperatures,” Int. J. Fatigue, 28(11), pp. 1633–1639. [CrossRef]
Wu, X. Y. , Zhao, Z. Z. , and Chen, X. , 2015, “ A Design Approach for Creep Fatigue Evaluation of Hydrogenation Reactor Made of 2.25Cr1MoV Steel,” J. Mech. Eng., 51(6), pp. 51–57 (in Chinese). [CrossRef]

Figures

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Fig. 2

Design concept for creep-fatigue loading conditions: (a) fatigue-dominant and (b) creep-dominant

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Fig. 1

Creep- and fatigue-dominant creep-fatigue loading conditions based on creep-fatigue interaction diagram

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Fig. 3

Fatigue design curve of code case 2605 generated based on its framework

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Fig. 5

Fatigue design curves (SN) with various accelerating functions of fatigue action considered

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Fig. 8

Cyclic frequency behavior with various indexes for plastic strain describing the cyclic frequency

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Fig. 6

Cyclic frequency behavior with various initial holding times

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Fig. 14

Relationship between creep strain rate and stress level for various temperatures

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Fig. 4

Comparisons for relative creep life based on the four accelerating functions of fatigue action: (a) pure creep rupture life of 300,000 h and (b) pure creep rupture life of 1,000,000 h

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Fig. 7

Effect of cyclic frequency on fatigue design curve of code case 2605 based on the framework of model A (initial holding time): (a) pure creep rupture life of 300,000 h and (b) pure creep rupture life of 1,000,000 h

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Fig. 9

Effect of cyclic frequency on fatigue design curve of code case 2605 based on the framework of model A (index for plastic strain describing the cyclic frequency): (a) pure creep rupture life of 300,000 h and (b) pure creep rupture life of 1,000,000 h

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Fig. 10

Relationship between allowable fatigue cycles at the stress of 106 MPa and the index for plastic strain describing the cyclic frequency for various creep rupture lives

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Fig. 11

Effect of strain damage factor on fatigue design curve of code case 2605 based on the framework of model A: (a) pure creep rupture life of 300,000 h and (b) pure creep rupture life of 1,000,000 h

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Fig. 12

Relationship between the adjusted uniaxial Omega creep-damage parameter and stress level for various temperatures

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Fig. 13

Creep-damage behavior of the joint between nozzle and main reactor at creep expose time of 5015 h: (a) global stress distribution, (b) local stress distribution, (c) adjusted uniaxial Omega creep-damage parameter, and (d) creep damage

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