Comparative Study of Adhesive Wear for CoCr, TiC-NiMo, WC-Co as Potential FSW Tool Materials

Abstract:

Friction stir welding is a novel and promising joining process and most common welding tool failure is transformation of geometry caused by wear. In our point of view, this is adhesion wear. The lathe testing of adhesion wear was conducted to compare wear resistance of following materials: Co-25wt%Cr, TiC-25wt%Ni/Mo and WC-6wt%Co. According to characteristics of investigated materials, they are capable to become alternatives for conventional frictional stir welding (FSW) tool materials. Adhesive wear tests were performed by turning aluminium alloy AW6082-T6 at low speed – travel length, turning speed and feed rate were selected to simulate FSW conditions. The adhesive wear was determined as the change of the geometry of the cutting edges of the tool measured using SEM images. Most promising tool material in terms of adhesion wear resistance is WC-Co hardmetal. The two main stages of wear were distinguished: at first, the appearance of intensive adhesion wear followed by steady state wear. Surface fatigue wear complements development of the adhesive wear.

• Periodical: Solid State Phenomena (Volume 267)
• Pages: 224-228
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.267.224
• Online since: October 2017
• Authors: Mart Kolnes, Jakob Kübarsepp, Fjodor Sergejev, Märt Kolnes*
• Keywords: Adhesive Wear, Cermet, Friction Stir Welding, Hardmetal

References

[1] P.L. Threadgill, A.J. Leonard, H.R. Shercliff, P.J. Withers, Friction stir welding of aluminium alloys, International Materials Reviews. 54 (2009) 49-93.

DOI: 10.1179/174328009x411136

[2] R.S. Mishra, Z.Y. Mab, Friction stir welding and processing, Materials Science and Engineering. 50 (2005) 1-78.

[3] Y.N. Zhang, X. Cao, S. Larose, P. Wanjara, Review of tools for friction stir welding and processing, Canadian Metallurgical Quarterly. 51 (2012) 250-260.

DOI: 10.1179/1879139512y.0000000015

[4] H. Klaasen, J. Kubarsepp, T. Roosaar, M. Viljus, R. Traksmaa, Adhesive wear performance of hardmetals and cermets, Wear. 263 (2010) 1122-1128.

DOI: 10.1016/j.wear.2010.01.006

[5] I. Hussainova, J. Kübarsepp, J. Pirso, Mechanical properties and features of cermets, Wear. 250 (2001) 818-825.

DOI: 10.1016/s0043-1648(01)00737-2

[6] K.J. Brookes, World Dictionary and Handbook of Hardmetals and Hard Materials. London, (1996).

[7] D. Mari, Mechanical Behavior of Hardmetals at High Temperature, in: V. K. Sarin, D. Mari, L. Llanes (Eds. ), Comprehensive Hard Materials, Elsevier Ltd., Oxford, (2014).

DOI: 10.1016/b978-0-08-096527-7.00014-3

[8] Y.S. Al Jabbari, Physico-mechanical properties and prost hodontic applications of Co-Cr dental alloys: a review of the literature, The Journal of Advanced Prosthodontics. 6 (2014) 138-145.

DOI: 10.4047/jap.2014.6.2.138

[9] A.G. Evans, E.A. Charles, Fracture toughness determinations by indentation, J. Am. Ceram. Soc. 59 (1976) 371-372.

[10] X. Wang, P.Y. Kwon, WC/Co tool wear in dry turning of commercially pure aluminium, Journal of Manufacturing Science and Engineering. 136 (2014) 1-7.

DOI: 10.1115/1.4026514

[11] J. Kübarsepp, H. Klaasen, F. Sergejev, Performance of cemented carbides in cyclic loading wear conditions, Materials Science Forum. 534-536 (2007) 1221-1224.

DOI: 10.4028/www.scientific.net/msf.534-536.1221

[12] H. Klaasen, J. Kübarsepp, A. Tšinjan, F. Sergejev, Performance of carbide composites in cyclic loading wear conditions, Wear. 271 (2011) 837-841.

DOI: 10.1016/j.wear.2011.03.005

[13] F. Sergejev, I. Preis, I. Hussainova, J. Kübarsepp, Fatigue mechanics of TiC-based cemented carbides, J. Eng. Trib. 222 (2008) 201-209.

DOI: 10.1243/13506501jet342