Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지

Effect of Temperature on the Fracture Toughness of A516 Gr70 Steel

  • Published : 2000.01.01
Download PDF
⟨ Previous Next ⟩

Abstract

Fracture toughness JIC and KIC tests were performed on A516 Gr70 carbon steel plate at the temperature ranging from -$160^{\circ}C$ to $600^{\circ}C$, and test results were analyzed according to ASTM E 813 and ASTM E 399. Unloading compliance J-integral tests were performed on 1TCT specimens. The relation between the $J_{IC}$ value and the test temperature was obtained. It was concluded that the temperature ranging from $-15^{\circ}C$ to $600^{\circ}C$ is the upper shelf region of ductile-brittle transition temperature, and in this temperature range, fracture toughness $J_{IC}$ values decreased with increasing temperature. The ductile brittle transition temperature of the material may be around $-30^{\circ}C$. In the region near $-30^{\circ}C$, the tendency of $J_{IC}$ to decrease with decreasing temperature was significant.

Keywords

References

  1. Francois, D., 1986, 'Relation between Various Fracture Transition Temperature and the $K_{IC}$ Fracture Toughness Transition Curve,' Engineering Fracture Mechanics, Vol. 23, No.2, pp. 455 -465 https://doi.org/10.1016/0013-7944(86)90087-1
  2. Joyce J. A. and Hasson, D. F., 1980, 'Characterization of Transition Temperature Behavior of HY 130 steel by the $J_{IC}$ Fracture Toughness Parameter,' Engineering Fracture Mechanics, Vol. 13, pp. 417-430 https://doi.org/10.1016/0013-7944(80)90074-0
  3. Jung Y. H. and Murty, K. L., 1988, 'Effect of Temperature and Strain Rate on Upper Shelf Fracture Behavior of A533B Class 1 Pressure Vessel Steel,' ASTM STP969, pp. 392-401
  4. Miglin, M. T., Van Der Sluys, W. A., Futato, R. J. and Domian, H. A., 1986, 'Effect of Strain Aging in the Unloading Compliance J Test,' ASTM STP 856, pp. 150-165
  5. Mills, W. J. 1987, 'Fracture Toughness of Two Ni- Fe-Cr Alloys,' Engineering Fracture Mechanics, Vol. 26, No.2, pp. 223-228 https://doi.org/10.1016/0013-7944(87)90199-8
  6. Murty, K. L. and Mahmood, S. T., 1990, 'Serrated Flow in Irradiated and Partially Denitrided Mild Steel,' ASTM STP 1046, pp. 422-430
  7. Murty, K. L., 1999, 'Role and Significance of Source Hardening in Radiation Embrittlement of Iron and Ferritic Steels,' Journal of Nuclear Materials 270, pp. 115-128 https://doi.org/10.1016/S0022-3115(98)00766-1
  8. Neal, B. K. and Priest, R. H., 1986, 'The Unloading Compliance Method for Crack Length Measurement Using Compact Tension and Precracked Charpy Specimens,' ASTM STP 856, pp. 375-393
  9. Rice, J. R., 1968, 'A Path Independent Integral and the Approximate Analysis of Strain Concen-tration by Notches and Cracks,' Journal of Applied Mechanics, Vol. 35, pp. 379-386
  10. Ross. E. and Eisele. V. 1988. 'Determination of Material Characteristic Values in Elastic- Plas-tic Fracture Mechanics by Means of J-Integral Crack Resistance Curve,' Journal of Testing and Evaluation, Vol. 16, No.1, pp. 1-11
  11. Smith, R. F., and Doig, P., 1986, 'Crack Length Measurement by Compliance in Fracture Toughness Testing,' Experimental Mechanics, pp. 122-127 https://doi.org/10.1007/BF02320003
  12. Watanabe, J., Iwadate, T., Tanaka, Y., and Yokobori, T., 1987, 'Fracture Toughness in the Transition Region,' Engineering Fracture Mechanics, Vol. 28, No. 516, pp. 589-600 https://doi.org/10.1016/0013-7944(87)90055-5
  13. 1996, 'Standard Test Method for $J_{IC}$, A Measure of Fracture Toughness,' Annual Book of ASTM Standards, ASTM E 813-89
  14. 1996, 'Standard Method of Test for PlaneStrain Fracture Toughness of Metallic Materials, ' Annual Book of ASTM Standards, ASTM E 399-90