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  • Accelerated creep testing of new creep resisting weld metals = Preizkusi pospešenega lezenja zvarov novega jekla, odpornega proti lezenju
    Mandziej, Stan T. ; Výrostková, A. ; Šolar, Mojca, 1960-
    New creep-resisting weld metals of P91 grade were manufactured by MMA process producing multi-bead multi-layer test coupons, from which specimens were taken for accelerated creep testing on Gleeble ... physical simulator. The recently developed accelerated creep testing (ACT) procedure on Gleeble allows transforming in a relatively short time (less than 100 hours) the microstructure of creep-resisting materials near to the thermodynamic equilibrium state, resembling that of multi-years application at creep condition. Such advanced transformation of microstructure in the investigated weld metals after ACT was confirmed with microscopy and microanalytical study. The results also appeared to be in agreement with Thermocalc calculations. Using optimum combination of chemical compositions of the electrodes with welding procedure and post-weld heat-treatment, advantageous mechanical properties were achieved as well as results of ACT indicating potentially long creep life in exploitation conditions. In discussion of the ACT results, comparisons with results of conventional creep testing have been made. The ACT procedure appears to be useful in fast screning of newly developed creep resisting materials.
    Vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 42, št. 1, jan.-feb. 2008, str. 13-25)
    Vrsta gradiva - članek, sestavni del
    Leto - 2008
    Jezik - angleški
    COBISS.SI-ID - 686506

vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 42, št. 1, jan.-feb. 2008, str. 13-25)

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