Paper Titles
Influence of Residual Stresses on the Interfacial Toughness Measurement by Cross-Sectional Nanoindentation
p.400
Micorstructure and Properties of 2Cr16Ni2MoN Stainless Steel
p.404
Stress Relaxation Testing For Analysis of 12Cr1MoVG Steel for Creep Strength Evaluation
p.408
Compressive Deformation Behavior of the Ferritic Oxide Dispersion Strengthened Alloys at Elevated Temperatures
p.412
Evaluation of Critical Fracture Stress in Low Alloy Steels by Finite Element Analysis of Small Punch Test
p.416
Empirical Correlation between Parameters from Small Punch and Tensile Curves of Mn-Mo-Ni Low Alloy Steels by Using Test and FE Analysis
p.420
Structural Strength and Buckling Analysis for a Steel Derrick after its Members Removed Partly
p.424
Strengthening of Cu-Ti2SnC Composites due to Microstructural Changes in the Material
p.429
Impact Toughness of Titanium Alloys with Different Strengthening Methods
p.433

Evaluation of Critical Fracture Stress in Low Alloy Steels by Finite Element Analysis of Small Punch Test

Article Preview

Abstract:

The critical fracture stresses (σ* f(sp)) in various low alloy steels for a reactor pressure vessel(RPV) were evaluated by a small punch test (SP test) and a finite element analysis (FEA) in the cleavage temperature region(-150~-196 °C). The load-displacement curves and distances from the center to the fracture surface (Df) of the FEA results are in good agreement with the experimental results. The maximum principal stresses (SP fracture stresses, σf(SP)) were determined from the FE analysis, when the maximum load was applied to the SP test. The SP critical fracture stress, σ* f(sp) in various reactor pressure vessel (RPV) steels was found to have a linear relationship with the values obtained from the precracked specimens (σ* f(PCVN)). The σ* f(sp) shows a lower value than σ* f(PCVN) because the SP specimen had a lower triaxial stress condition. However, this result indicates that a small punch test could be a useful method to evaluate the cleavage fracture behavior of low alloy steels.

You might also be interested in these eBooks
Progresses in Fracture and Strength of Materials and Structures View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 353-358)

Pages:

416-419

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.353-358.416

Citation:

Cite this paper

Online since:

September 2007

Authors:

Min Chul Kim, Jae Bong Lee, Yong Jun Oh, Bong Sang Lee

Keywords:

Critical Fracture Stress, Finite Element Analysis (FEA), Reactor Pressure Vessel, Small Punch Test

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] A. K. Ghosh and S. S. Hecker: Metall. Trans. Vol. 6A (1974), p.1065.

Google Scholar

[2] A. Okada, M. L. Hamilton, and F. A. Garner: J. Nucl. Mater. Vol. 179-181 (1991), p.445.

Google Scholar

[3] E. Fleury and J. S. Ha: J. Press. Ves. and Piping, 75 (1998), p.699.

Google Scholar

[4] B. C. Choi, Y. J. Oh, G. M. Kim, and J. H. Hong: J. Kor. Inst. Met. & Mater. Vol. 39 (2001), p.165.

Google Scholar

[5] J. H. Hong et al, : KAERI report, KAERI/RR-2225/2001, (2002).

Google Scholar

[6] J. R. Fould, P. J. Woytowitz, T. K. Parnell, and C. W. Jewett: J. Test. Eval. Vol. 23 (1995), p.3.

Google Scholar

[7] J. S. Ha and E. Fleury: Int. J. Press. Ves. Piping Vol. 75 (1998), p.699.

Google Scholar

[8] X. Mao, T. Shoji, and H. Takahashi: J. Test. Eval. Vol. 15 (1987), p.30.

Google Scholar

[9] Y. Shindo, K. Horiguchi, T. Sugo, and Y. Mano: J. Test. Eval. Vol. 28 (2000), p.431.

Google Scholar

[10] W. K. Lee, D. R. Metzger, A. Donner, and O. Lepik : Small specimen test techiques, ASTM STP 1329, edited by W. R. Corwin, S. T. Rosaski, and E. Van Walle, (ASTM, 1998), p.539.

Google Scholar

[11] R. O. Ritchie, J. F. Knott, and J. R. Rice: J. Mech. Phys. Solids, Vol. 21 (1973), p.395.

Google Scholar

[12] W. Y. Yang, M. Y. Huh, S. J. Roh, B. S. Lee, Y. J. Oh, and J. H. Hong: J. Kor. Inst. & Mater. Vol. 38 (2000), p.675.

Google Scholar

[13] B. S. Lee, W. J. Yang, M. Y. Huh, and J. H. Hong, in: Proc. Of Sixteenth Conference on Mechanical Behaviors of Materials, Cheju, Korea (2002).

Google Scholar