Fatigue mechanics of carbide composites Online publication date: Sat, 28-Feb-2015
by Fjodor Sergejev, Heinrich Klaasen, Jakob Kubarsepp, Irina Preis
International Journal of Materials and Product Technology (IJMPT), Vol. 40, No. 1/2, 2011
Abstract: The present article is an overview of mechanical degradation during monotonic and cyclic loading of powder composite materials based on the tungsten- and titanium carbides, also known as hardmetals and cermets. Heterogeneous structure of powder metallurgy (PM) hardmetals and cermets make its difficult to predict their mechanical properties. The TiC-based cermets (with Fe/Ni binder) were tested and results are compared with that of conventional WC-Co hardmetal grades. The three-point bending cyclic and surface fatigue tests are performed in order to define fatigue properties of studied materials. Fatigue crack developments during testing are analysed by scanning electron microscopy (SEM). On the bases of received experimental results and fracture analysis, fatigue failure mechanisms are developed. New numerical model for prediction of fatigue properties is proposed. Tungsten-free composites (cermets) are prospective candidates to replace the hardmetals in metalforming operations (especially blanking of sheet metals). Comparative studies are shown the superiority of the cermets over ordinary hardmetals.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Materials and Product Technology (IJMPT):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com