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Effect of heat treatment on the structure and properties of extruded P/M alloy 718

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Abstract

The structure and mechanical properties of alloy 718 prepared from argon atomized powder have been investigated for a wide range of extrusion ratios and temperatures. The tensile and stress-rupture properties of extruded bar are sensitive to heat treatment. Notch ductility can be conferred through appropriate combination of solution anneal and intermediate temperature age. Structural evaluation shows that such treatment provides a uniform grain structure together with a coarseγ′’ precipitate dispersion and small amounts of δ Ni3Cb phase at grain boundaries.

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Authors and Affiliations

  1. Paul D. Merica Research Laboratory, International Nickel Co. Inc., Sterling Forest, 10901, Suffern, NY

    H. F. Merrick

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  1. H. F. Merrick
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Merrick, H.F. Effect of heat treatment on the structure and properties of extruded P/M alloy 718. Metall Trans A 7, 505–514 (1976). https://doi.org/10.1007/BF02643966

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  • DOI: https://doi.org/10.1007/BF02643966

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