Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지
DOI QR코드

DOI QR Code

Relationship Between Small-punch Creep Test Data and Uniaxial Creep Test Data based on the Monkman-Grant Relation

몽크만·그랜트관계에 기초한 소형펀치 크리프시험 데이터와 일축 크리프시험 데이터의 관계

  • Kim, Bum Joon (Department of Mechanical Engineering, Osan Univ.) ;
  • Sohn, Ilseon (Department of Automotive Engineering, Osan Univ.) ;
  • Lim, Byeong Soo (School of Mechanical Engineering, Sungkyunkwan Univ.)
  • 김범준 (오산대학교 기계공학과) ;
  • 손일선 (오산대학교 자동차공학과) ;
  • 임병수 (성균관대학교 기계공학과)
  • Received : 2013.05.31
  • Accepted : 2013.07.16
  • Published : 2013.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

The relationship between the small-punch creep test and the conventional creep test was investigated experimentally using a method similar to that of the Monkman-Grant relationship. Uniaxial and small-punch creep rupture tests were carried out on 9Cr-2W ferritic steel (Commercial Grade 92 steel: X10CrWMoVNb 9-2) at elevated temperatures. From the relation derived in the same manner as the Monkman-Grant relation, a correlation between the displacement rate in response to the small-punch creep test and the strain rate in the uniaxial creep test was found, and the creep life was calculated using this relation. Furthermore, the failure modes of the small punch creep test specimens were investigated to show that the fracture was caused by creep.

Keywords

References

  1. Parker, J. D. and James, J. D., "Creep behavior of miniature disc specimens of low alloy steel," ASME PVP-Developments in a Progressing Technology, Vol. 279, pp. 167-172, 1994.
  2. Ule, B., Sustar, T., Dobes, F., Milicka, K., Bicego, V., Tettamanti, S., Maile, K., Schwarzkopf, C., Whelan, M. P., Kozlowski, R. H., and Klaput, J., "Small punch test method assessment for the determination of the residual creep life of service exposed components: outcomes from an interlaboratory exercise," Nuclear Engineering and Design, Vol. 192, No. 1, pp. 1-11, 1999. https://doi.org/10.1016/S0029-5493(99)00039-4
  3. Yoon, K. B., Park, T. G., Shim, S. H., and Jeong, I. S., "Assesment of creep properties of 9Cr steel using small punch creep test," Transactions of the KSME A, Vol. 25, No. 9, pp. 1493-1500, 2001.
  4. Parker, J. D., Stratford, G. C., Shaw, N., Spink, G., and Metcalfe, H., "The Application of Miniature Disc Testing for the Assessment of Creep Damage in CrMoV Rotor Steels," BALTICA IV, Plant Maintenance, pp. 477-488, 1998.
  5. Kim, B. J., Lim, B. S., and Ki, D. H., "Creep Behavior and Life Evaluation of Aged P92 Steel," International Journal of Modern Physics B, Vol. 20, No. 25n27, pp. 4231-4236, 2006. https://doi.org/10.1142/S0217979206041148
  6. Kameda, J., "Mechanical Properties of alumininized CoCrAlY coatings in advanced gas turbine blades," Materials Science and Engineering A, Vol. 234-236, pp. 489-492, 1997. https://doi.org/10.1016/S0921-5093(97)00283-9
  7. Tettamanti, S. and Crudeli, R., "Small Punch Creep Test: A Promising Methodology for High Temperature Plant Components Life Evaluation," In Baltica IV, Plant Maintenance for Managing Life & Performance, Vol. 2, pp. 501-509, 1998.
  8. Wachter, O., Zabelt, K., Ennis, P. J., Helmrich, A., and Bohme, A., "The design, Manufacture and installation of a P92 header," Forschungszentrum Juelich Schriften Reihe Energietechnik, Vol. 5, No. 1, pp. 351-360, 1998.
  9. Doves, F. and Milicka, K., "On the Monkman-Grant relation for small punch test data," Materials Science and Engineering A, Vol. 336, No. 1-2, pp. 245-248, 2002. https://doi.org/10.1016/S0921-5093(01)01975-X
  10. Yang, Z. and Wang, Z., "Relationship between strain and central deflection in small punch creep specimens," International Journal of Pressure Vessels and Piping, Vol. 80, No. 6, pp. 397-404, 2003. https://doi.org/10.1016/S0308-0161(03)00069-3