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TECHNICAL PAPERS

Model of Grain Deformation Method for Evaluation of Creep Life in In-Service Components

[+] Author and Article Information
Hyo-Jin Kim, Jae-Jin Jung

R&D Center, Korea Heavy Industries & Construction Co., Ltd., 555 Guygok-Dong, Changwon, 641-792, Korea

J. Eng. Mater. Technol 122(1), 56-59 (Jul 09, 1999) (4 pages) doi:10.1115/1.482765 History: Received June 08, 1998; Revised July 09, 1999
Copyright © 2000 by ASME
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References

Roberts, B. W., Ellis, F. V., and Henry, J. F., 1989, Remaining-Life Estimation of Boiler Pressure Parts, Volume 4: Metallographic Models for Weld-Heat-Affected Zone, EPRI CS-5588, pp. 37–39.
Roberts, B. W., Avernue, K., and Askins, M. C., 1989, Remaining-Life Estimation of Boiler Pressure Parts, Volume 3: Base Metal Model, EPRI CS-5588, pp. 22–23.
Shoji, T., 1964, Material Degradation & Life Prediction, REALIZE INC., pp. 179–186.
Tanaka, C., 1990, NRIM Creep Data Sheet, No. 35A, NRIM, pp. 5–9.
ASTM Standard, 1990, “Standard Practice for Production and Evaluation of Field Metallographic Replicas,” Annual Book, E1351-90, pp. 953–958.
Vrhovac, M., Barata, J. C. R., and Rodrigues, R., 1996, “Automation of Microstructure Analysis by Artificial Intelligence Image Processing,” Proceedings of Failures ’96, pp. 297–312.
Louis,  P., and Gokhale,  A. M., 1995, “Application of Image Analysis for Characterization of Spatial Arrangements of Features in Microstructure,” Metall. Mater. Trans A, 16, pp. 1449–1456.

Figures

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Creep-rupture strength of recovered and ex-serviced materials
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Measurement of grain deformation
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Measurement procedure of grain deformation using image-processing technique
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Distribution of grain deformation using image-processing technique
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Relation between creep life fraction and deformation index
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Distribution of deformation index for creep life fraction of ex-serviced material at 550°C and 4 kg/mm2
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Distribution of deformation index for creep life fraction of recovered material at 538°C and 16 kg/mm2
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Distribution of deformation index for creep life fraction of recovered material at 538°C and 16 kg/mm2
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Distribution of deformation index for creep life fraction of ex-serviced material
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Distribution of deformation index for creep life fraction of ex-serviced material

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