Friction surfacing of titanium alloy with aluminium metal matrix composite

• Published in: Surface engineering Vol. 27; no. 2; pp. 92 - 98
• Main Authors: Reddy, G Madhusudhan, Prasad, K Satya, Rao, K S, Mohandas, T
• Format: Journal Article
• Language: English
• Published: London, England Taylor & Francis 01.03.2011; SAGE Publications; Maney; Institute of Materials, Minerals and Mining
• Subjects: Alloying elements; Aluminum base alloys; Applied sciences; Contact of materials. Friction. Wear; Diffusion; Exact sciences and technology; Friction; Friction surfacing; Hardness; Joining, thermal cutting: metallurgical aspects; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metal matrix composite; Metal matrix composites; Metallography; Metals. Metallurgy; Production techniques; Surface treatment; Surfacing; Titanium; Titanium alloy; Titanium base alloys; Wear; Welding; Titanium alloy; Friction surfacing; Hardness; Diffusion; Metal matrix composite; Wear; Mechanical properties; Building up by welding; Composite material; Surface treatment; Friction; Friction welding; Tribology
• ISSN: 0267-0844; 1743-2944
• DOI: 10.1179/174329409X451128

Present work pertains to investigation carried out on solid state surfacing of titanium alloy Ti-6Al-4V with AA2124SiCp metal matrix composite by friction surfacing. The coating was characterised by metallography and dry sliding wear. For the first time it was found that titanium alloy could be friction surfaced with metal matrix composites. The surface coating exhibited the wear properties to many-fold than that of the titanium substrate. Significant improvement in the wear resistance of titanium alloy may be attributed to the interdiffusion of elements and the formation of nanocrystalline layer of the alloy at the interface.