Several master alloys with defined chemical composition, able to generate liquid phases at relatively low temperatures, were identified and produced by gas atomisation. Relevant thermodynamic calculations, including melting ranges for the master alloys, cooling and lever rule diagrams for the PM steels under consideration, were carried out using the ThermoCalc program and databases. The studied materials were prepared by blending the master alloys with a commercially available iron powder and graphite, in predetermined proportions. Liquid phase sintering of the die-pressed powder mixtures was performed at a sintering temperature of 1280 deg C during 1 hr. Interrupted sintering experiments, followed by water quenching from selected temperatures, were performed for studying the alloying mechanisms and the microstructural development of the steels. DSC and Dilatometry were used as an aid for the interpretation of the microstructural observations. Additional experiments, carried out to study liquid formation and the diffusion paths leading to the redistribution of the alloying elements, were performed through the preparation of special powder mixtures.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Alloying and sintering behaviour of selected iron-graphite-master alloy powder mixtures


    Contributors:
    Castro, F. (author) / Sarasola, M. (author) / Baumgaertner, F. (author) / Dougan, M. (author) / Mitchell, S. (author) / Lipp, K. (author) / Bender, H.J. (author) / Coffin, C. (author) / Dunkley, J. (author)


    Publication date :

    2005


    Size :

    8 Seiten, 19 Bilder, 1 Tabelle, 33 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Laser-sintering powder

    Emerald Group Publishing | 2008


    Self-lubricating copper-graphite coatings for friction joints formed by electrocontact sintering of powder compositions

    Kovtun,V. / Pleskachevsky,Y. / Metal-Polymer Research Inst.of Belarussian Academy of Science,Gomel,BY | Automotive engineering | 1998


    AGING BEHAVIOUR OF SiC-PARTICULATE REINFORCED 7075 Al ALLOY COMPOSITES PREPARED BY MECHANICAL ALLOYING

    Sankaranarayanane, K. / Singh, P. / Powder Metallurgy Association of India | British Library Conference Proceedings | 2002


    Slurry-powder sintering furnace

    Bene, J. / Jansen, J. F. / Seiger, H. N. | NTRS | 1978


    Study on the solid-phase sintering of the nano-structured heavy tungsten alloy powder

    Jang, J.S.C. / Fwu, J.C. / Chang, L.J. et al. | Tema Archive | 2007