VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Investigations of mechanical properties of CF-8A stainless steel
    Malešević, Milan ; Vojvodič-Tuma, Jelena ; Šuštaršič, Borivoj
    We investigated the mechanical properties of CF-8A cast stainless steel before and after different periods of ageing. This is low-carbon Cr-Ni-based austenitic stainless steel with some amount of ... delta ferrite in the structure. This material can also be called duplex, because of its two-phase (austenite-ferrite) microstructure. It is used in thermo-energetic installations. Long-term exposure to high temperatures causes material degradation, thermal embrittlement, decrease of toughness and eventually cracks. Three different alloys were made, with different delta ferrite contents, 3.3, 13.3 and 28 vol.% of delta ferrite in the structure. Alloys were aged for one year on two different ageing temperatures, 290 [compositum]C and 350 [compositum]C. Mechanical tests which are performed were tensile test. Vickers hardness test and Charpy impact toughness test. The goal was to determine the influence of delta ferrite content, time and temperature of ageing on mechanical properties of the CF-8A steel after long-term exposure to high temperatures. On the basis of results obtained here it will be possible to understand more clearly under what conditions and when thermal embrittlement of the vital parts in power plants occurs.
    Vir: Program in knjiga povzetkov = Program and book of abstracts (Str. 68)
    Vrsta gradiva - prispevek na konferenci
    Leto - 2011
    Jezik - angleški
    COBISS.SI-ID - 910250

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