Heating Effects in WC-Co Cemented Carbides as a Result of Reciprocative Dry Sliding Friction

Abstract:

Article Preview

WC-Co based cemented carbides are widely used in technical applications, in which they are exposed to complex thermo-mechanical loadings. Previous research work has demonstrated that these materials exhibit a lifetime-limiting fatigue sensitivity at room temperature. This investigation is focused on the influence of heating as a result of friction of pin-on-plate tribocouples. WC-Co samples have been manufactured and surface finished by wire-EDM and grinding. Reciprocative dry friction experiments are performed under various loading conditions and sliding velocities. Correlations are established between the bulk temperature rise of the test samples and the imposed test conditions, material properties, surface conditions and coefficient of friction. Topographies and cross-section views of the tested samples were examined by SEM, revealing temperature dependent wear mechanisms, including binder phase modification.

Info:

Periodical:

Materials Science Forum (Volumes 561-565)

Main Theme:

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee

Pages:

2197-2200

Citation:

K. Bonny et al., "Heating Effects in WC-Co Cemented Carbides as a Result of Reciprocative Dry Sliding Friction", Materials Science Forum, Vols. 561-565, pp. 2197-2200, 2007

Online since:

October 2007

Export:

Price:

$38.00

[1] P.S. Sreejith, B.K.A. Ngoi, Dry machining: machining of the future. J. Mater. Process. Technol. 101 (2000), 287-291.

[2] F. Klocke, G. Eisenblatter, Dry cutting, Ann. CIRP Vol. 46(2) (1997), 519-526.

DOI: https://doi.org/10.1016/s0007-8506(07)60877-4

[3] Acchar W., Gomes U., Kayser W., Goring J., Strength degradation of a tungsten carbide-cobalt composite at elevated temperatures, Mater. Charact. 17 (1999), 55-68.

DOI: https://doi.org/10.1016/s1044-5803(98)00056-4

[4] K. Bonny, P. De Baets, B. Lauwers, J. Vleugels, O. Van Der Biest, Influence of electro-discharge machining, microstructural and mechanical properties on wear of hardmetals, Plansee 16th Int. Sem., Vol. 2 (2005), 863-877.

DOI: https://doi.org/10.4028/0-87849-462-6.2025

[5] K. Bonny, P. De Baets, B. Lauwers, W. Liu, J. Vleugels, S. Salehi, O. Van Der Biest, Reciprocative sliding wear behavior of WC-Co Cemented Carbides, submitted to Int. J. Refr. Met. & Hard Mater.

DOI: https://doi.org/10.4028/0-87849-462-6.2197

[6] Ashby M.F., Abulawi J., Kong H.S., Temperature maps for Frictional Heating in Dry Sliding, Tribology Transactions (1991), 577-587.

DOI: https://doi.org/10.1080/10402009108982074

[7] V. Voitovich, V. Sverdel, R. Voitovich, E. Golovko, Oxidation of WC-Co, WC-Ni and WC-Co-Ni hardmetals in the temperature range 500-800 °C, Int. J. Refract. Met. Hard Mater. Vol. 14 (1996), 289-295.

DOI: https://doi.org/10.1016/0263-4368(96)00009-1