Effects of alloying elements on the equilibrium precipitated phases, incipient and final melting temperature of Mar-M247 superalloy were studied through thermodynamic calculation. The results show that the main phases are γ' precipitates, MC, M6C, M23C6 carbides, μ phases, MB2 and M3B2 borides. Hf and Ta segregate more seriously mostly during solidification process. Around the composition range, Cr, Mo, Ti and Hf influence the initial melting temperature mostly. Precipitation temperature and precipitation amount of carbides increase linearly with the increase of the C content. Furthermore, Hf, Ti and Ta are contributed to the precipitation of MC carbides, Cr improves the precipitation of M23C6 and W and Mo are beneficial to the precipitation of M6C. The precipitation of μ phase is mainly influenced by Mo and W, the precipitation temperature and mass fraction of μ phase increase as the content of Mo and W increase. The precipitation behavior of γ' phase is affected by Al, Ti and Ta contents, and their effects decrease in turn.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Thermodynamic Calculation and Analysis of Equilibrium Precipitated Phases in Mar-M247 Superalloy


    Beteiligte:
    AN Ning (Autor:in) / YUAN Xiaofei (Autor:in) / NIU Yongji (Autor:in) / TIAN Jianjun (Autor:in) / LI Zhenrui (Autor:in)


    Erscheinungsdatum :

    2018




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt




    Thermodynamic Calculation of Equilibrium Phases of K488 Alloy

    MENG Fanguo / KONG Shengguo / LI Wei et al. | DOAJ | 2018

    Freier Zugriff

    Development of a welded repair for airfoils of MAR-M247 material

    Rose, D.P. jun. / Saenz, J.A. | Tema Archiv | 1994


    Simplified Calculation of Chemical Equilibrium and Thermodynamic Properties for Diesel Combustion

    Alberer, Daniel / Oppenauer, Klaus Siegfried / del Re, Luigi | SAE Technical Papers | 2011


    MICROPOROUS PRECIPITATED SILICA

    OKEL TIMOTHY A | Europäisches Patentamt | 2017

    Freier Zugriff