한국안전학회지 (Journal of the Korean Society of Safety)

  • 제17권4호
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  • Pages.5-10
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  • 2002
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  • 1738-3803(pISSN)
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  • 2383-9953(eISSN)
한국안전학회 (The Korean Society of Safety)
권호 표지

고온설비의 FFS평가를 위한 308 스테인리스강의 크리프 균열성장 재료물성에 대한 연구

A Study on Creep Crack Growth Properties of 308 SS for FFS Evaluation of High Temperature Components

  • 발행 : 2002.12.01
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초록

For fitness-for-service evaluation of high temperature plant components with defects, crack growth life must be assessed properly as indicated in the recent draft of API 579 code. Type 308 stainless steel has been widely used as a field weld material in the petrochemical industry. In this study, creep crack data of type 308 stainless steel are collected and re-analyzed using $C_t$ as a characterizing fracture parameter. A unique da/dt versus $C_t$ relationship was obtained despite of difference of creep deformation constant of the reviewed materials and specimen geometry of the tested specimens. The obtained results can be employed for crack growth life assessment and fitness-for-service evaluation for the cracks in high temperature components. It is also argued that since the effect of creep properties and other material variability on the creep crack growth behavior would be minor the obtained model may be applied for most of the 308 stainless steels.

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참고문헌

  1. 가스기술기준(KGS PV001-1998), '압력용기 사용중 검사기준,' 1998
  2. 가스기술기준(KGS PV002-1999), '압력용기 검사 실무지침,' 1999
  3. 가스기술기준(KGS P001-1999), '석유화학 배관계 검사기준,' 1999
  4. 가스기술기준(KGS P002-1999), '석유화학 배관계 검사 실무 지침,' 1999
  5. 가스기술기준(KGS PV009-2000), '석유화학용가열로 튜브두께 계산 기준,' 2000
  6. 가스기술기준(KGS PV010-2000), '직화식 가열로 및 보일러검사 실무지침,' 2000
  7. Section 10 Assessment of Components Operating in the Creep Regime, API 579 Fitness for Service Procedures, (Draft) January 2000
  8. A. Saxena, 'Nonlinear Fiacture Mechanics for Engineers,' CRC Press, 1998
  9. S. Konosu, A. Hashimoto, H. Mashiba, M. Takeshima and T. Ohtsuka, 'Creep crack growth properties of type 308 austenitic stainless steel weld metals,' Welding Journal, Vol. 77, No. 8, pp. 322-327, 1998
  10. S. Konosu, H. Mashiba, M. Takeshima, and T. Ohtsuka, 'Effects of pretest ageing on creep crack growth properties of type 308 austenitic stainless steel weld metals,' Engineering Failure Analysis, Vol. 8, No. 1, pp. 75-85, 2001 https://doi.org/10.1016/S1350-6307(99)00047-3
  11. M. Kamaraj and V. M. Radhakrishnan, 'Creep cracking in austenitic weld metal,' ICF 7. Advances in Fracture Research, Vol. 2, Houston, Texas, USA, 20-24 Mar, 1989
  12. V. M. Radhakrishnan and M. Kamaraj, 'Relation between rupture time and steady state rate integral,' Materials Science & Engineering A, Vol. A127, No. 1, pp.15-18, 1990
  13. V. M. Radhakrishnan, M. Kamaraj and V. V. Balasubramaniam, 'Life estimation of cracked stainless steel components under creep conditions,' Transactions of the ASME, Journal of Engineering Materials and Technology, Vol. 113, No. 3, pp.303-316, 1991 https://doi.org/10.1115/1.2903410
  14. V. M. Radhakrishnan and M. Kamaraj, 'An analysis of high-temperature crack growth in type 308 Cb stainless steel and its weldment,' Transactions of the ASME, Journal of Pressure Vessel Technology, Vol. 113, No. 4, pp. 538-541, 1991 https://doi.org/10.1115/1.2928792
  15. K. B. Yoon and A. Saxena, 'Creep crack growth and creep-fatigue crack growth data collection for low alloy steel,' Georgia Institute of Technology, Report submitted to The Matehals Properties Council Inc., February 13, 2002
  16. K. B. Yoon and A. Saxena, 'Assessment of defects in high temperature components' : Part II Creep crack growth analysis of surface cracks in a pressurized cylinder, Georgia Institute of Technology, Report submitted to The Materials Properties Council, 2002
  17. G. A. Webster and R. A. Ainswoith, High Temperature Component Life Assessment, Chapman & Hall. 1994
  18. D. 0. Harris, C. H. Wells, H. J. Grunloh, R. H. Ryder, J. M. Bloom, C. C. Schultz and R. Viswanathan, BLESS: Boiler Life Evaluation and Simulation System, A Computer Code for Relia-bility Analysis of Headers and Piping , Reliability and Risk in Pressure Vessels and Piping, ASME PVP Vol. 251, pp. 17-26, 1993
  19. D. 0. Harris, 'Probabilistic Fracture Mechanics with Applications to Inspection Planning and Design Reliability Technology,' ASME AD Vol. 28 pp. 57-76, 1992
  20. A. Saxena, J. Han and K. Banerji, 'Creep Crack Growth Behavior in Power Plant Boiler and Steam Pipe Steels,' Transactions of the ASME, Journal of Pressure Vessel Technology, Vol. 110, pp. 13 7-146, 1998