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TECHNICAL PAPERS

Creep Crack Growth in X20CrMoV 12 1 Steel and Its Weld Joint

[+] Author and Article Information
Y. K. Park

Hyundai Heavy Industries Co., Ltd., Ulsan, Korea 682-792

K. S. Kim

Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, Korea 790-784e-mail: illini@postech.ac.kr

Y. K. Chung, J. J. Park

Korea Heavy Industries and Construction Co. Ltd., Changwon, Korea 641-792

J. Pressure Vessel Technol 123(2), 191-196 (Nov 13, 2000) (6 pages) doi:10.1115/1.1357159 History: Received May 04, 1999; Revised November 13, 2000
Copyright © 2001 by ASME
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References

Landes, J. D., and Begley, J. A., 1976, ASTM Spec. Tech. Publ. 590, pp. 128–148.
Ohji, K., Ogura, K., and Yataka, Y., 1976, Proc., 25th Annual Meeting of the Society Of Material Science, Japan, pp. 19–20.
Nikbin, K. M., Webster, G. A., and Turner, C., 1976, ASTM Spec. Tech. Publ. 601, pp. 47–62.
Saxena, A., 1989, “Mechanics and Mechanism of Creep Crack Growth,” Fracture Mechanics: Microstructure and Micromechanisms, S. V. Nair, J. T. Tien, R. C. Bates, and O. Buck, eds., American Metal Society.
Riedel, H., and Rice, J. R., 1980, “Tensile Cracks in Creeping Solids,” ASTM Spec. Tech. Publ. 700, pp. 112–130.
Saxena, A., 1986, “Creep Crack Growth under Nonsteady State Conditions,” ASTM Spec. Tech. Publ. 905, pp. 185–201.
Reiedel,  H., and Detampel,  V., 1987, “Creep Crack Growth in Ductile, Creep-Resistant Steel,” Int. J. Fract., 33, pp. 239–262.
Bassani, J., Hawk, D. E., and Saxena, A., 1989, “Evaluation of the Ct Parameter for Characterizing Creep Crack Growth Rate in the Transient Regime,” ASTM Spec. Tech. Publ. 995, pp. 7–26.
Leung, C.-P., McDowell, D. L., and Saxena, A., 1989, “A Numerical Study of Non-Steady-State Creep at Stationary Crack Tips,” ASTM Spec. Tech. Publ. 995, pp. 55–67.
Adefris,  N., Saxena,  A., and McDowell,  D. L., 1996, “Creep-Fatigue Crack Growth Behavior in 1Cr-1Mo-0.25V Steels Part I: Estimation of Crack Growth Parameters,” Fatigue Fract. Eng. Mater. Struct., 19, pp. 387–399.
Adefris,  N., Saxena,  A., and McDowell,  D. L., 1996, “Creep-Fatigue Crack Growth Behavior in 1Cr-1Mo-0.25V Steels Part II: Crack Growth Behavior and Models,” Fatigue Fract. Eng. Mater. Struct., 19, pp. 401–422.
Kumar, V., German, M. D., and Shih, C. F., 1981, An Engineering Approach for Elastic-Plastic Fracture Analysis, EPRI NP-1931, prepared by General Electric Company.
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Hui,  C. Y., and Riedel,  H., 1981, “The Asymptotic Stress and Strain Field near the Tip of a Growing Crack under Creep Conditions,” Int. J. Fract., 17, pp. 409–425.
Johnson,  H. H., 1965, Mater. Res. Stand., 5, pp. 442–445.

Figures

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Stress-strain curves for the base metal and weld metal
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Creep curves for the base metal and weld metal
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Variation of crack length with time in creep crack growth tests for the base metal specimens
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Variation of crack length with time in creep crack growth tests for the weld specimens
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Appearance of the fracture surface
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An SEM fractograph of the fracture surface: (a) base metal specimen 1, (b) weld specimen 2
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Correlation of da/dt with C*(t) for the base metal specimens
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Correlation of da/dt with C*(t) for the weld specimens
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Comparison of experimental and calculated load point displacements for a base metal specimen
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Comparison of experimental and predicted load point creep velocities for a base metal specimen
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Development of the creep zone in a base metal specimen
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Development of the creep zone in a weld specimen
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Distribution of normal and shear stresses ahead of the crack tip in a weld specimen

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