Evaluation of Material Degradation of 1Cr-1Mo-0.25V steel using Ball Indentation Method

  • Seok, Chang-Sung (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim, Jeong-Pyo (Digital Module Division, Sound Solution Team (R & D), Sam Sung Electro-Mechanics Co., LTD.) ;
  • Koo, Jae-Mean (School of Mechanical Engineering, Sungkyunkwan University)
  • Published : 2004.10.01

Abstract

The BI (Ball Indentation) method has the potential to assess the mechanical properties and to replace conventional fracture tests. In this study, the effect of aging on mechanical behavior of 1Cr-1Mo-0.25V steels procured by isothermal aging heat-treatment at four different aging times in the range of 0~1820 hours at 630$^{\circ}C$, were investigated using BI system.

Keywords

References

  1. Abdel-Latif, A. M., Corbett, S. M. and Taplin, D. M. R., 1982, Metal Science, Vol. 16, pp. 90-96 https://doi.org/10.1179/030634582790427181
  2. Haggag, F. M. and Murty, K. L., 1997, in: P. K. Liaw, O. Buck, R. J. Arsenault, R. E. Green Jr.(Eds.), Non-destructive Evaluation and Materials Properties III, TMS, Warrendale, PA, p. 101
  3. Haggag, F. M. and Nanstad, R. K., 1989, 'Estimating Fracture Toughness using Tension or Ball Indentation Tests and a Modified Critical Strain Model,' The American Society of Mechanical Engineers PVP, Vol. 170, pp. 41-46
  4. Haggag, F. M., et al., 1990, 'Use of Automated Ball Indentation Testing to Measure Flow Properties and Estimate Fracture Toughness in Metallic Materials,' ASTM STP 1092, pp. 188-208
  5. Haggag, F. M., 1993, 'In-Situ Measurements of Mechanical Properties Using Novel Automated Ball Indentation Systems,' Small Specimen Test Techniques Applied to Nuclear Reactor Vessel Thermal Annealing and Plant Life Extension, ASTM STP 1204, pp. 27-44
  6. Mathew, M. D. and Murty, K. L., 1999, 'Nondestructive Studies on Tensile and Fracture Properties of Molybdenum at Low Temperatures,' Journal of Materials Science, Vol. 33, pp. 1497-1503 https://doi.org/10.1023/A:1004547709783
  7. Nham, S. H. and Kim, A. K., 1998, 'Nondestructive Evaluation of Toughness Degradation of 1Cr-1Mo-0.25V Steel Using Electrical Resistivity,' Transaction of KSME A, Vol. 22, No. 5, pp. 814-820
  8. Seok, C. S, Kim, D. J. and Bae, B. K., 2000, 'Evaluation of Material Degradation Using Electrical Resistivity Method,' Transaction of KSME A, Vol. 24, No. 12, pp. 2992-3002
  9. Tabor, D., 1951, The Hardness of Metals, Oxford University Press, New York
  10. Yamashita, M., et al., 1997, 'Service-induced Changes in the Microstructure and Mechanical Properties of a Cr-Mo-Ni-V Turbine Steel,' ISIJ International, Vol. 37, No. 11, pp. 1133-1138 https://doi.org/10.2355/isijinternational.37.1133