Naslov
Fracture of Jaw Arm Made of Cast Steel GS-42CrMo4

Autori
Smoljan, Božo ; Iljkić, Dario ; Tomašić, Neven ; Traven, Furio

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

Izvornik
Proceedings of the International conference “Mechanical Technology and Structural Materials” / - , 2010

Skup
International conference “Mechanical Technology and Structural Materials”

Mjesto i datum
Split, Hrvatska, 21.10.2010. - 22.10.2010

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
cast steel; microstructure; mechanical properties

Sažetak
Unsuitable mechanical behaviour of cast steel GS-42CrMo4 (EN) was investigated. In this paper the influence of inclusions and pouring temperature on mechanical properties of arm of carrying jaw made of cast steel GS-42CrMo4 (EN) was investigated. It was found out that high content of aluminium caused the formation of aluminium nitride, AlN which significantly decreased strength of casting. In the process of solidification enrichment of lamellas of AlN nitride arise on the grain boundaries. Because of low deformability of AlN nitride, initiation of fracture was possible at minimal deformation. The strength of the casting was not being raised by subsequent heat treatment. High pouring temperature and low cooling rates resulted in coarse-grained microstructure of steel casting. Coarse microstructure was not being reduced by subsequent heat treatment.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Temeljne tehničke znanosti

POVEZANOST RADA