Pregled bibliografske jedinice broj: 1231861
Effect of Si and Ni Addition on Graphite Morphology in Heavy-Section Spheroidal Graphite Iron Parts
Effect of Si and Ni Addition on Graphite Morphology in Heavy-Section Spheroidal Graphite Iron Parts // Science and Processing of Cast Iron XI
Jönköping, Švedska, 2017. str. 70-77 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
CROSBI ID: 1231861 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Effect of Si and Ni Addition on Graphite
Morphology in Heavy-Section Spheroidal Graphite
Iron Parts
(Effect of Si and Ni Addition on Graphite Morphology
in Heavy-Section Spheroidal Graphite Iron Parts)
Autori
Bauer, Branko ; Mihalic Pokopec, Ivana ; Petrič, Mitja ; Mrvar, Primož
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Science and Processing of Cast Iron XI
/ - , 2017, 70-77
Skup
11th International Symposium on the Science and Processing of Cast Iron
Mjesto i datum
Jönköping, Švedska, 4-7.09.2017
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
spheroidal cast iron ; heavy-section castings ; chunky graphite
Sažetak
Metallographic analysis is applied to the study of the chunky graphite morphology in heavy-section castings of spheroidal graphite cast irons. Three castings with different Si and Ni contents were prepared. Three positions in casting from the edge to the centre, with different cooling rates, were chosen for microstructure observation. The effect of the Si and Ni content on the graphite morphology and mechanical properties of heavy- section spheroidal graphite cast iron parts was investigated. Cerium containing commercial inoculant was used for in-stream inoculation. Chunky graphite area was estimated in micro- and macrostructure. Mechanical properties were determined on tensile test bars taken from the centre of the casting. Macro- and microstructure examination showed that the castings with high Si- content and Ni addition had chunky graphite present, while the castings produced by use of low Si and Ni containing charge had no chunky graphite. High Si-content is strong chunky graphite promoter, especially in castings with slow cooling rate. Ni addition also promotes chunky graphite formation, but only in thermal centre of the casting (where the cooling rate is the lowest). The elongation is severely lowered when chunky graphite appears in the microstructure.
Izvorni jezik
Engleski
Znanstvena područja
Strojarstvo
POVEZANOST RADA
Ustanove:
Fakultet strojarstva i brodogradnje, Zagreb
