Publikationen

High temperature mechanical properties of WC-Co hard metals

Autor(en)
T. Teppernegg, T. Kluensner, C. Kremsner, C. Tritremmel, C. Czettl, S. Puchegger, S. Marsoner, R. Pippan, R. Ebner
Abstrakt

Understanding of the load situation and consequently the lifetime of cutting tools made of WC-Co hard metal requires quantitative data for thermo-mechanical properties. For the elevated temperatures present in application, these data are currently rather rare. The present work does discuss elastic material properties up to 1100 degrees C and compressive yield strength up to 900 degrees C, both as a function of Co content. The fracture toughness was determined as a function of the WC grain size and Co content up to 800 degrees C. Young's modulus and yield strength decrease with increasing temperature. A significant rise in fracture toughness was observed at 800 degrees C with increasing Co content and decreasing WC grain size. A possible reason for this increase is an increase in the plastic zone size at elevated temperatures. (C) 2016 Elsevier Ltd. All rights reserved.

Organisation(en)
Fakultätszentrum für Nanostrukturforschung
Externe Organisation(en)
Mat Ctr Leoben Forsch GmbH, CERATIZIT Austria Gesellschaft m.b.H., Österreichische Akademie der Wissenschaften (ÖAW)
Journal
International Journal of Refractory Metals and Hard Materials
Band
56
Seiten
139-144
Anzahl der Seiten
6
ISSN
0263-4368
DOI
https://doi.org/10.1016/j.ijrmhm.2016.01.002
Publikationsdatum
04-2016
Peer-reviewed
Ja
ÖFOS 2012
Materialphysik
Schlagwörter
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/high-temperature-mechanical-properties-of-wcco-hard-metals(9a38768f-f32c-46d7-9710-7f31ac9fd1de).html