A nano-composite high strength (NCHS) steel was tested and evaluated in this work. Monotonic tension, strain controlled fatigue and fracture toughness tests were conducted at ambient temperature. Chemical composition, microstructure and fractography analysis were also performed. The NCHS steel showed excellent combination of high strength, high ductility and high fracture toughness with relatively low alloy content, compared with a S7 tool steel. Fatigue performance of the NCHS steel was also better than that of S7 tool steel. With the exceptional combination of high strength and high fracture toughness, the nano-composite high strength steel may have potential applications in gears, shafts, tools and dies where high fatigue performance, shock load resistance, wear and corrosion resistance is required.


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    Title :

    Cyclic Deformation, Fatigue and Fracture Toughness of a Nano-Composite High Strength Steel


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    2005 SAE Commercial Vehicle Engineering Conference ; 2005



    Publication date :

    2005-11-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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