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Characterization of creep-fatigue crack growth behavior in 2.25 Cr-1 Mo steel using (C t)avg

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Abstract

Time-dependent creep-fatigue crack growth (CFCG) is an important consideration in the design and remaining life estimation of high temperature components. CFCG tests were carried out on compact type (CT) specimens of 2.25 Cr-1.0 Mo steel and its behavior, for hold times ranging from 10 seconds to 50 seconds, at 594°C (1100°F) was characterized using the average value of the C t-parameter, (C t)avg. The trends in the creep-crack growth (CCG) data for this material are also compared with the CFCG data. The analytically estimated values of (C t)avg are compared with the experimental values of (C t)avg obtained from the measured values of load-line deflection rates. It is also shown that even in the absence of accurate creep deformation constants, accurate estimates of the measured values of (C t)avg can be obtained in CT specimens

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Authors and Affiliations

  1. School of Materials Science and Engineering, Georgia Institute of Techhnology, 30332-0245, Atlanta, GA, USA

    Parmeet S. Grover & Ashok Saxena

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  1. Parmeet S. Grover
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  2. Ashok Saxena
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Grover, P.S., Saxena, A. Characterization of creep-fatigue crack growth behavior in 2.25 Cr-1 Mo steel using (C t)avg . Int J Fract 73, 273–286 (1995). https://doi.org/10.1007/BF00027270

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  • DOI: https://doi.org/10.1007/BF00027270

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