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Creep Property and Crack Tip Creep Field Analysis of Nickel Base alloy 600

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Strength of Materials Aims and scope

Establishing a quantitative prediction model for the SCC crack growth rate of dissimilar metal welded joints at the safe end is very important for the safety evaluation of nuclear power structures. However, the SCC growth process is closely related to crack tip creep. In this paper, uniaxial tensile creep experiments under different stress are carried out on nickel base alloy 600, and the constitutive creep equation of nickel base alloy 600 is established. At the same time, the SCC crack tip creep field is analyzed using finite element software, and the effects of crack tip creep variables, creep rates, and material creep properties on the crack tip field are analyzed. Results show that nickel base alloy 600 occurs creep under high stress, and the creep rate in the crack tip region decreases with the crack inclination angle and the distance from the crack tip. The peak values of creep and creep rate appear directly in front of the crack propagation direction. Research results lay a foundation for establishing a quantitative prediction model of SCC.

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Acknowledgments

This work was financially supported by the Fundamental Research Funds for the Central Universities, CHD (300102252513), the Science and Technology Project of Shaanxi Market Supervision Administration (2021KY10), and the State Administration for Market Regulation Research Project (2022MK165).

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Authors and Affiliations

  1. Key Laboratory of Road Construction Technology and Equipment, MOE, Chang’an University, Xi’an, China

    J. L. Zhang & Z. Y. Jiang

  2. Xi’an Special Equipment Inspection Institute, Xi’an, China

    J. L. Zhang, S. Y. Mu & H. C. Li

  3. College of Transportation Engineering, Chang’an University, Xi’an, China

    Z. Y. Jiang

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  1. J. L. Zhang
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  2. Z. Y. Jiang
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Correspondence to S. Y. Mu.

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Translated from Problemy Mitsnosti, No. 2, p. 117, March – April, 2023.

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Zhang, J.L., Jiang, Z.Y., Mu, S.Y. et al. Creep Property and Crack Tip Creep Field Analysis of Nickel Base alloy 600. Strength Mater 55, 384–390 (2023). https://doi.org/10.1007/s11223-023-00532-5

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  • DOI: https://doi.org/10.1007/s11223-023-00532-5

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