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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

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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