Naslov
Experimental Study of Indentation Fracture Toughness in Nanostructured Cemented Carbides

Autori
Sakoman, Matija ; Ćorić, Danko ; Renić, Božo

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

Izvornik
Abstracts Book and Proceedings on USB of International Conference on Materials, Tribology, Recycling, MATRIB 2018 / Šnajdar Musa, Mateja ; Sakoman, Matija - Zagreb : Hrvatsko društvo za materijale i tribologiju (HDMT), 2018, 282-291

Skup
19th International Conference on Materials (MATRIB 2018)

Mjesto i datum
Vela Luka, Hrvatska, 27.06.2018. - 29.06.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Nanostructured cemented carbides, hardness, fracture toughness

Sažetak
In this paper the hardness and Vickers indentation fracture toughness values for nanostructured cemented carbides was tested and analyzed. The experimental part included the testing of three samples: WC with 5% cobalt (WC- 5Co), WC with 10% cobalt (WC-10Co) and WC with 15% cobalt (WC-15Co). Hardness was tested by Vickers method (HV30) according to HRN EN ISO 6507-1: 2005. Fracture toughness was determined and compaired by different indentation methods such as Palmqvist, Shetty, Niihara, Antis etc. These methods use the length of cracks that propagate from the tip of the Vickers pyramid imprint to determine fracture toughness. The results show that by increasing the amount of Cobalt in cemented carbides hardness values drop, and the fracture toughness increases. They also indicate a difference in results using various mathematical models. By sintering nanostructured cemented carbide, higher hardness values with a small decrease in fracture toughness can be achived.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA