Pregled bibliografske jedinice broj: 840784
Dimensional stability of AlSi11 alloy
Dimensional stability of AlSi11 alloy // 3rd Mediterranean Conference on Heat Treatment and Surface Engineering / Leskovšek, Vojteh ; Smoljan, Božo ; Pellizzari, Massimo ; Podgornik, Bojan ; Sedlaček, Marko (ur.).
Ljubljana: Slovenian Society for Heat Treatment, Institute of Metals and Technology, 2016. str. 1-8 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
CROSBI ID: 840784 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Dimensional stability of AlSi11 alloy
Autori
Zovko Brodarac, Zdenka ; Burja, Jaka ; Holjevac Grgurić, Tamara
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
3rd Mediterranean Conference on Heat Treatment and Surface Engineering
/ Leskovšek, Vojteh ; Smoljan, Božo ; Pellizzari, Massimo ; Podgornik, Bojan ; Sedlaček, Marko - Ljubljana : Slovenian Society for Heat Treatment, Institute of Metals and Technology, 2016, 1-8
ISBN
978-961-92518-9-8
Skup
3rd Mediterranean Conference on Heat Treatment and Surface Engineering
Mjesto i datum
Portorož, Slovenija, 26.09.2016. - 28.09.2016
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
AlSi11 alloy ; solidification ; microstructure ; thermal analysis ; dimensional stability
Sažetak
Alloy AlSi11 belongs to a group of eutectic alloys, which are characterized by high castability, low pouring temperature and narrow solidification interval which makes it suitable for advanced casting technologies. Susceptibility of AlSi11 alloy dimensional stability on extreme temperature condition has been investigated. Thermal stress in material results from thermal expansion incompatibility in materials during the temperature changes. Dilatometer thermal analysis resulted in length extension for l = 111, 29 - 122, 38 µm at 550 °C and reduction l = -11, 86 µm at t = -40 °C and fast regeneration to l-40=17.26 µm. Exposure of the AlSi11 alloy sample to the cyclic thermal load in the temperature range from t -15 °C to -60 °C resulted in length reduction of l-60=-31.55 µm to l-15=-24.52 µm. Dimensional stability is depended from microconstituents interaction during thermal load. Microstructural investigation reveals that thermal load causes spheroidisation of eutectic Si and recrystallization of primary Al, as well as Mg precipitation. Dimensional i.e. length instability should be considered in extreme application conditions.
Izvorni jezik
Engleski
Znanstvena područja
Kemijsko inženjerstvo, Metalurgija
