Naslov
Load Dependece of Hardness and Fracture Toughness Values on Hardmetals

Autori
Sakoman, Matija ; Ćorić, Danko ; Vuić, Dario

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 2016 / Žmak, Irena ; Aleksandrov Fabijanić, Tamara ; Ćorić, Danko - Zagreb : Hrvatsko društvo za materijale i tribologiju (HDMT), 2016, 366-372

Skup
International Conference on Materials, Tribology, Recycling, MATRIB 2016

Mjesto i datum
Vela Luka, Hrvatska, 23.06.2016. - 25.06.2016

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Hardmetal; Fracture toughness; Hardness; Indentation load

Sažetak
Fracture toughness is one of the most important parametars for tool aplications and preformance assesment of WC-Co hardmetals. In this paper the effect of applied load on the hardness and fracture toughness of hardmetal is investigated. The tested sample contained 9 wt. % of Co and was manufactured by sinter-HIP process. Hardness measurements were carried out by Vickers method with four different loads: 29, 42 N (HV3) 49, 03 N (HV5) 196, 13 N (HV20) and 294, 20 N (HV30). Thirty measurements were conducted with each value of the applied load. At all measurements the sample surface showed cracks that spread from the vertices of the indentation. Dimensional characteristics of generated indentation and the resulting length of the cracks were measured by using an optical microscope, immediately after unloading. Fracture toughness was determined by Palmqvist method according to ISO 28079: 2009.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA