Naslov
Fractography Analysis of Low Alloyed Steel

Autori
Gojić, Mirko ; Kosec, Gorazd ; Ivanić, Ivana ; Kožuh, Stjepan ; Vrsalović, Ladislav ; Kosec, Borut

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

Izvornik
Mechanical Technologies and Structural Materials - MTSM 2019 / Jozić, Sonja ; Lela, Branimir - Split : Hrvatsko društvo za zaštitu materijala (HDZaMa), 2019, 49-52

Skup
9th International Conference: Mechanical Technologies and Structural Materials (MTSM 2019)

Mjesto i datum
Split, Hrvatska, 26.09.2019. - 27.09.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
high strength low alloyed steel, fractography analysis, microstructure, mechanical properties

Sažetak
High strength low alloyed steel (HSLA) are group of low carbon steel alloyed with a small contents of elements (Mo, Ti, V and Nb) in order to obtain high yield strength. Basic properties of the steel are: high strength, resistance to corrosion, good weldability and acceptable price. These steels are used for different applications: line pipe, off shore, tank for liquid natural gas etc. In this work, results of NIOMOL 490 K fine-grain structural steel with high yield strength and acceptable chemical composition, for welding without prior heating, were presented. Fractography and metallography analysis were carried out. After different heat treatment procedures microstructure of the steel was changed. It was found three areas of fracture surface, from ductile to brittle and mixed fracture surface depending on values of Charpy impact energy.

Izvorni jezik
Engleski

Znanstvena područja
Metalurgija

POVEZANOST RADA