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Analysis of the small punch creep test results according to the normalized lifetime fraction

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Abstract

The small punch creep test method was developed to complement the demerits of the existing uniaxial creep test method. A 10×10×0.5mm thin-plate specimen was used in the test, which could help save specimens and testing time. However, theories on the mechanism and significance of the small punch creep test have not been established clearly yet, and further research should be conducted. In this study, to analyze the behaviors of the small punch creep test, experiments were conducted using the interrupted small punch creep test method for five different lifetime fractions under the designed load and temperature using the Ni-base alloy, which is one of the very attractive candidate materials for the future advanced fossil power plant. The stress concentration part of the specimen, which is critical in analyzing the failure characteristics, was determined via FEM, and its effect on the failure mechanism was also studied through a microstructural analysis.

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Authors and Affiliations

  1. School of Mechanical Engineering, Sungkyunkwan University, Suwon, 440-746, Korea

    Jong Hoon Lee, Jong Gu Lee, Moon Ki Kim, Tae Kyung Jang & Byeong Soo Lim

  2. Research & Business Foundation, Sungkyunkwan University, Suwon, 440-746, Korea

    Sung Gook Oh

  3. Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon, 440-746, Korea

    Moon Ki Kim

  4. School of Mechanical Engineering, Osan University, Osan, 447-749, Korea

    Bum Joon Kim

  5. School of Multidisciplinary Engineering, Addis Ababa Institute of Technology, Addis Ababa, 385, Ethiopia

    Byeong Soo Lim

Authors
  1. Jong Hoon Lee
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  2. Sung Gook Oh
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  3. Jong Gu Lee
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  4. Moon Ki Kim
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  5. Bum Joon Kim
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  6. Tae Kyung Jang
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  7. Byeong Soo Lim
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Correspondence to Byeong Soo Lim.

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Lee, J.H., Oh, S.G., Lee, J.G. et al. Analysis of the small punch creep test results according to the normalized lifetime fraction. Met. Mater. Int. 20, 835–839 (2014). https://doi.org/10.1007/s12540-014-5006-x

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  • DOI: https://doi.org/10.1007/s12540-014-5006-x

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