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  • The influence of austenitising temperature on the microstructure and mechanical properties of low-alloyed Ni-Mo-Cu austempered ductile iron = Vpliv temperature austenitizacije na mikrostrukturo in mehanske lastnosti malolegirane NiMoCu austemprane duktilne železove litine
    Radulović, Branko ...
    In the present study we have investigated the effect of austenitising temperature and austempering time on the microstructure and mechanical properties of low-alloyed Ni-Mo-Cu ductile iron. The ... specimens were austenised at 850, 875, 900 and 930°C for 120 min, then austempered for 10, 30,60, 120, 240 and 360 min at 350°C, and examined by optical and scanning electron microscopy. The volume fraction of retained austenite, bainite, martensite and austenite-carbon content results were then correlated with microstructural changes, the kinetics of transformation and impact toughness. Following short periods of austempering time, the carbon content of the retained austenite is low and on subsequent cooling to room temperature it transforms to martensite, resulting in low impact values. The carbon content of the austenite was evaluated by measuring the latice parameters using X-ray diffraction. Optimum properties were obtained at 900°C for intermediate austempering periods (120-240 min).
    Vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 34, št. 5, sep.-okt. 2000, str. 207-212)
    Vrsta gradiva - članek, sestavni del
    Leto - 2000
    Jezik - angleški
    COBISS.SI-ID - 234154

    Povezava(-e):

    Digitalna knjižnica Slovenije - dLib.si

vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 34, št. 5, sep.-okt. 2000, str. 207-212)

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