Abstract
THE cause of hair-line cracks in low-alloy steels has been debated for many years. The main hypotheses now current can be reduced to the following : the hydrogen-pressure hypothesis and the residual stress hypothesis. It follows from the former that hydrogen alone can induce hair-line cracks to form ; and from the latter that, in the absence of residual stress, no hair-line cracks will form even if hydrogen is present.
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References
Dana, A. W., Shortsleeve, F. J., and Troiano, A. R., J. Metals, 7, 895 (1955).
Petch, N. J., “Residual Stresses in Metals and Metal Construction” (Reinhold, 1954).
Houdremont, E., and Schrader, H., Stahl u. Eisen, 27, 653 (1941).
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BARKER, A., WAINWRIGHT, A. Hair-line Cracks in Low-alloy Steels. Nature 177, 1136–1137 (1956). https://doi.org/10.1038/1771136b0
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DOI: https://doi.org/10.1038/1771136b0
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