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Knjižnica tehniških fakultet, Maribor (KTFMB)
  • Contribution to ternary system Al-Ti-B. Part 2, Study of alloys in Al-AlB2-TiB2 triangle
    Zupanič, Franc ; Spaić, Savo ; Križman, Alojz
    In arc melted and aluminothermically prepared alloys with composition in the triangle Al-AlB2-TiB2 four solid phases are observed: [alpha]-Al, [alpha]AlB12, AlB2 and TiB2. The unvariant reaction ... between L, [alpha]-AlB12 and TiB2 is the eutectic one L = [alpha]-ALB12. During the reaction TiB2 platelets are sequantially formed on facets of [alpha]AlB2, but their formulation may be completely suppressed by the presence of primary TiB2. Decomposition of [alpha]-AlB12 does not occur on cooling, but only during isothermal annealing under 900 oC probably according to the transition reaction L+[alpha]AlB12 -> TiB2+AlB2. Dissolution of [alpha]-AlB12 and growth of AlB2 take place in a faceted manner owing to their high entropies of solution. The low temperature AlB2 phase is not formed at all on cooling of concentrated alloys with an overall composition lying on the AlB2-TiB2 tieline, whereas in less concentrated alloys it is usually formed on the prmary TiB2 particles in the regions distant from [alpha]-AlB12.
    Vir: Materials science and technology. - ISSN 0267-0836 (14, št. 12, 1998, str. 1203-1212)
    Vrsta gradiva - članek, sestavni del
    Leto - 1998
    Jezik - angleški
    COBISS.SI-ID - 4184086

vir: Materials science and technology. - ISSN 0267-0836 (14, št. 12, 1998, str. 1203-1212)

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