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Control of strain aging in alpha-iron

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Abstract

The principles of strain aging are described in terms of the Cottrell theory. It is deduced that the practical control of strain aging must come through control of the effective amounts of carbon and nitrogen in solution. Existing control methods such as precipitation through alloying or heat treatment are reviewed and their deficiencies described. Experimental results for a series of alloys containing carbon and nitrogen show that only carbon strain aging can be eliminated by heat treatment. The use of titanium, aluminum, vanadium, and boron as alloying elements for the control of nitrogen strain aging is examined. All of these elements are effective but for economic reasons boron additions appear to offer the most promising practical solution to the problem of nitrogen strain aging in steels.

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Author notes

  1. Eric R. Morgan (Member AIME, Assistant Director of Research)

    Present address: Graham Research Laboratory, Jones & Laughlin Steel Corp., Pittsburgh, USA

Authors and Affiliations

  1. Scientific Laboratory, Ford Motor Co., Dearborn, Mich., USA

    Eric R. Morgan (Member AIME, Assistant Director of Research) & J. C. Shyne (Junior Member AIME)

Authors
  1. Eric R. Morgan
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  2. J. C. Shyne
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Additional information

TP 4382E. Manuscript,. Apr. 16, 1956. Cleveland Meeting, October 1956.

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Morgan, E.R., Shyne, J.C. Control of strain aging in alpha-iron. JOM 9, 65–69 (1957). https://doi.org/10.1007/BF03398454

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  • DOI: https://doi.org/10.1007/BF03398454

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