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The effects of phosphorus on the mechanical properties of low-carbon iron

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Abstract

Fe-P alloys with nominal compositions of 0.05, 0.1, 0.2, and 0.6 wt pet P were deformed in compression at temperatures between 77 and 295 K at strain rates between 2.5 x 10-4 and 3.5 x 10-2 per sec. The effect of grain size on the yield strength was investigated over a range of about ASTM 7 to 3.5. The results show that the yield strength of iron is increased 40 to 50 pet in the 0.05 and 0.1 P alloys at 295 K without affecting the notch impact transition temperature. At temperatures of 200 K and below solid solution softening occurs in all the alloys except for 0.6 pet P. The degree of softening at a given temperature is a function of the strain rate and grain size, being more pronounced at higher strain rates and larger grain sizes.

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Authors and Affiliations

  1. Edgar C. Bain Laboratory for Fundamental Research, United States Steel Corp. Research Center, Monroeville, Pa.

    W. A. Spitzig (Senior Scientist)

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  1. W. A. Spitzig
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Spitzig, W.A. The effects of phosphorus on the mechanical properties of low-carbon iron. Metall Trans 3, 1183–1188 (1972). https://doi.org/10.1007/BF02642451

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  • DOI: https://doi.org/10.1007/BF02642451

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