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Cleavage initiation in Fe−Ni alloys

  • Mechanical Behavior
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Abstract

The cleavage strengths of three titanium-refined iron-base alloys containing 0.3, 1.9, and 3.9 wt pct Ni were determined by slow bend testing of notched bar samples having various notch angles. Nickel markedly increased the cleavage strength. The primary effect of nickel appeared to be to increase the resistance of the ferrite matrix to the growth of cleavage fractures from cracked Ti(C,N) particles. The most plausible explanation for this effect is that nickel in some fashion changed the slip character of the ferrite, such as by increasing the ability to cross-slip, but there is some uncertainty as to how to decide what deformation parameters are the most critical ones in the regions around cracks or structural defects.

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Authors and Affiliations

  1. International Nickel Co., Sterling Forest, Suffern, N. Y.

    S. Floreen (Research Associate) & H. W. Hayden (Research Associate)

  2. Massachusetts Institute of Technology, Cambridge, Mass.

    T. M. Devine (Graduate Student)

Authors
  1. S. Floreen
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  2. H. W. Hayden
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  3. T. M. Devine
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Floreen, S., Hayden, H.W. & Devine, T.M. Cleavage initiation in Fe−Ni alloys. Metall Trans 2, 1403–1406 (1971). https://doi.org/10.1007/BF02913367

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  • DOI: https://doi.org/10.1007/BF02913367

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