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  • Accelerated carbide spheroidisation and refinement (ASR) of the C45 steel during controlled rolling = Pospešena sferoidizacija in udrobnjenje karbidov (ASR) pri kontroliranem valjanju jekla C45
    Hauserova, Daniela ; Dlouhý, Jaromír ; Nový, Zbyšek
    Current industry trends include the search for cost- and energy-saving procedures and technologies. A new process has been discovered recently, which allows a significant refinement of ferrite grains ... and a carbide spheroidisation in a shorter time than in the case of conventional heat-treatment techniques. During this newly-developed ASR-based (accelerated spheroidisation and refinement) plastic deformation an accelerated spheroidisation and a refinement due to the heat treatment in the vicinity of the A1 temperature occur. Controlled rolling enables a production of the materials with a fine microstructure and better mechanical properties than conventional production processes. Accelerated carbide spheroidisation and refinement (ASR) is aimed to produce steel workpieces with a microstructure consisting of a fine-grained ferrite matrix and globular carbide particles. In carbon steels, this microstructure has higher yield strength and toughness than the conventional ferritic-pearlitic microstructure. The presented paper describes the effect of the ASR process on the C45 steel. The pearlite morphology was influenced by forming it at the temperatures around critical temperature A1 and an accelerated carbide-particle spheroidisation was achieved. The deformation increases the dislocation density and enhances the diffusion rate. Cementite globules form rapidly, within seconds or minutes at the most.
    Vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 48, št. 5, sep.-oct. 2014, 797-800)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2014
    Jezik - angleški
    COBISS.SI-ID - 1099434

    Povezava(-e):

    http://mit.imt.si/Revija/
    Digitalna knjižnica Slovenije - dLib.si

vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 48, št. 5, sep.-oct. 2014, 797-800)

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