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Optimization of strength and toughness in two high-strength stainless steels

  • Mechanical Behavior
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Abstract

It has been found possible to increase the strength and toughness of two high-strength stainless steels, AFC 77 and AFC 260, by austenitizing at temperatures that are in the range where both austenite and δ ferrite are stable. The δ ferrite is then removed by isothermal transformation in the range 1800° to 2000°F. This technique results in a greater solution of carbides and intermetallic particles and consequently in a greater amount of retained austenite than is possible at austenitizing temperatures below the δ-ferrite range. In addition, the technique permits optimum mechanical properties to be obtained over a wider compositional range.

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Authors and Affiliations

  1. Commercial Airplane Group, Boeing Company, Seattie, Wash.

    Donald Webster

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  1. Donald Webster
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Webster, D. Optimization of strength and toughness in two high-strength stainless steels. Metall Trans 2, 1857–1862 (1971). https://doi.org/10.1007/BF02913416

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  • DOI: https://doi.org/10.1007/BF02913416

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