Naslov
NUCLEATION AND GRAPHITE GROWTH IN NODULAR CAST IRON - AN OVEREVIEW

Autori
Tubić Bulat, Barbara ; Zovko Brodarac, Zdenka ; Mrvar, Primož

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
PROCEEDINGS BOOK OF 19th INTERNATIONAL FOUNDRYMEN CONFERENCE / Dolić, Natalija ; Zovko Brodarac, Zdenka ; Brajčinović, Sandra - Sisak : Metalurški fakultet Sveučilišta u Zagrebu, 2021, 226-236

ISBN
978-953-7082-39-0

Skup
19th International Foundrymen Conference Humans – Valuable Resource for Foundry Industry Development

Mjesto i datum
Split, Hrvatska, 16.06.2021. - 18.06.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
casting ; nodular iron ; solidification ; nucleation ; graphite growth ; overview

Sažetak
The term nodular iron cast refers to a group of iron alloys with a maximum carbon content of 4 wt. % and silicon from 1.7 wt. % to 2.8 wt. %. This type of cast iron is characterized by the presence of carbon in the spherical or nodular form of graphite in a ferrite, pearlite or ferrite-pearlite matrix. Due to its better mechanical properties in relation to the other iron cast groups, it is widely used in production of gearboxes, crankshafts, turbine rotors, tanks, transportation industries, etc. Generally, size, distribution and shape of graphite nodules ensure a good toughness, high value of elongation and yield strength, castability and machinability. The course of solidification and each parameter of the production and solidification process has a certain impact on the mechanical properties and microstructure of the final product. However, solidification and graphite growth mechanisms in nodular cast iron have not been fully explained in despite to a large amount of research on the subject. Different experiments have led to the creation of different theories about the solidification process which aim to enable the creation of models for predicting the solidification process and the growth of graphite nodules. Predicting the development of microstructure and defining optimal parameters of the production process could prevent casting and microstructural defects thus ensuring desired properties of the casting. This paper provides an overview of several studies regarding the nucleation and graphite growth mechanism theories and experiments.

Izvorni jezik
Engleski

Znanstvena područja
Metalurgija

POVEZANOST RADA