Low carbon martensitic stainless steel 'JFE410DB-ER' with higher heat resistance and corrosion resistance than conventional steels for rotors of motorcycle brake disks has been developed. Effects of Nb and N on the heat resistant properties in 12%Cr-1.5%Mn steel were investigated for the purpose of enhancing the heat resistance by fine carbonitrides and keeping amount of solute (C + N). Main results were described as follows: (1) Addition of Nb introduced fine Nb(C, N), and thereby prevented temper softening. (2) Addition of N decreased the amount of coarse M23C6 and increased the amounts of solute (C + N) and fine Cr2(C, N), and thereby prevented temper softening. (3) Additions of Nb and N maintained the proper hardness for rotor materials even after tempering at 550 deg C. (4) Based on these findings, 12%Cr-1.5%Mn-0.13%Nb-0.05%C-0.04%N steel has been developed. The durability of the newly developed steel against temper softening above 500 deg C was much more longer than that of a conventional steel.


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    Titel :

    Martensitic stainless steel "JFE410DB-ER" with excellent heat resistance for motorcycle brake disks


    Weitere Titelangaben:

    Martensitischer nichtrostender Stahl 'JFE410DB-ER' mit ausgezeichneter Hitzebeständigkeit für Motorradbremsscheiben
    Titel japanisch


    Beteiligte:

    Erschienen in:

    JFE Giho ; 20 ; 47-52


    Erscheinungsdatum :

    2008


    Format / Umfang :

    6 Seiten, 10 Bilder, 2 Tabellen, 6 Quellen



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Japanisch




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