Title: Microstructures and wear behaviour of Y₂O₃ modified laser alloying layer on titanium

Authors: Peng Li

Addresses: Mechanical and Electronic Engineering Department, Shandong Agriculture and Engineering University, Shandong 250100, China

Abstract: Mo₅(Si, Al, Ti)₃C-TiC reinforced alloying layer was fabricated by laser alloying of the Mo-Al-Fe+TiC-SiC+Y₂O₃ mixed powders on pure Ti in an open system. Experimental results indicated that the precipitates, such as Mo₅(Si, Al, Ti)₃C and TiC were able to withstand the external normal load, which decreased the wear volume loss of laser alloying layer. And SiC-Y₂O₃ played an important role in refining the microstructure of alloying layer. An improvement of wear resistance of titanium surface was obtained under the actions of the hard precipitates and fine grain strengthening.

Keywords: laser alloying; wear properties; microstructure; wear resistance; Y2O3; titanium surfaces; yttrium oxide; yttria; silicon carbide.

DOI: 10.1504/IJMPT.2013.056289

International Journal of Materials and Product Technology, 2013 Vol.46 No.2/3, pp.197 - 204

Received: 14 Jul 2012
Accepted: 07 Nov 2012
Published online: 21 Jun 2014 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article