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The stress intensities for slow crack growth in steels containing hydrogen

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Abstract

A test technique has been developed to determine the stress intensity for slow crack growth in hydrogen precharged steels. Measurements on several grades of maraging steel and a 300M steel show that hydrogen contents on the order of 2 ppm reduce the stress intensity for slow crack growth by 50 pct or more of theK Ic values. At equivalent hydrogen contents the 300M steel was more severely embrittled than the mar aging steels. Comparison of the present results with aqueousK Iscc data indicates that the amount of hydrogen “picked up by the steels in stress corrosion increases with increasing yield strength.

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Authors and Affiliations

  1. Ontario Hydro, Toronto, Canada

    D. P. Dautovich

  2. International Nickel Co., Sterling Forest, 10901, Suffern, N. Y.

    S. Floreen (Research Fellow)

Authors
  1. D. P. Dautovich
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  2. S. Floreen
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Formerly with International Nickel Co.

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Dautovich, D.P., Floreen, S. The stress intensities for slow crack growth in steels containing hydrogen. Metall Trans 4, 2627–2630 (1973). https://doi.org/10.1007/BF02644267

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  • DOI: https://doi.org/10.1007/BF02644267

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