Microstructure and Microhardness of Ti6Al4V Alloy Treated by GTAW SiC Alloying

Open access

Microstructure and Microhardness of Ti6Al4V Alloy Treated by GTAW SiC Alloying

In this work, the change of the structure and microhardness of Ti6Al4V titanium alloy after remelting and remelting with SiC alloing by electric arc welding (GTAW method) was studied. The current intensity equal 100 A and fixed scan speed rate equal 0,2 m/min has been used to remelting surface of the alloy. Change of structure were investigated by optical and scanning electron microscopy. Microhardness test showed, that the remelting of the surface does not change the hardness of the alloy. Treated by GTAW SiC alloying leads to the formation of hard (570 HV0, 1) surface layer with a thickness of 2 mm. The resulting surface layer is characterized by diverse morphology alloyed zone. The fracture of alloy after conventional heat treatment, similarly to fracture after remelting with GTAW is characterized by extremely fine dimples of plastic deformation. In the alloyed specimens the intergranular and crystalline fracture was identified.

Cao X., Jahazi X., Cao M., M. Jahazi (2009). Effect of welding speed on butt joint quality of Ti-6Al-4V alloy welded using a high-power Nd:YAG laser. Optics and Lasers in Engineering. 47, 1231-1241.

Garbacz H., Wieciński P., Ossowski M., Ortore M. G., Wierzchoń T., Kurzydłowski K. J. (2008). Surface engineering techniques used for improving the mechanical and tribological properties of the Ti6A14V alloy. Surface & Coatings Technology. 202, 2453-2457.

Yong L., Shiron G., Hongtao L., Zhongmin J. (2009). Microstructure analysis and wear behavior of titanium cermet femoral head with hard TiC layer. Journal of Biomechanics. 42, 2708-2711.

Filip R., Sieniawski J. (2006). Mikrostruktura i właściwości użytkowe warstwy wierzchniej stopu tytanu Ti-6Al-4V kształtowanej metodą stopowania laserowego. Inżynieria Materiałowa 3.

Filip R. (2006). Alloying of surface layer of the Ti-6Al-4V titanium alloy through the laser treatment. Journal of Achievements in Materials and Manufacturing Engineering. 15, 174-180.

Lisiecki A, Klimpel A. (2008). Diode laser surface modification of, Ti6Al4V alloy Ti improve erosion wear resistance. Archives of Materials Science and Engineering. 32, 5-12.

Liqun L., Dejian L., Yanbin Ch., Chunming W., Fuquan L. (2009). Electron microscopy study of reaction layers between single-crystal WC particle and Ti-6Al-4V after laser melt injection. Acta Materialia. 57, 3606-3614.

Ossowska A., Zielinski A., Buczek M. (2010). Influence of Laser Melting on Surface Layer Properties of Titanium Alloy Ti6Al4V. Journal of Biomechanic. 43 (1), 55.

Dudek A., Bałaga Z. (2009). Residual stress state in titanium alloy remelted using GTAW method. Archives of Foundry Engineering. 9 (2), 193-196.

Pleshakov E., Sienyav'ski Ya., Filip R. (2002). Laser surface modification of Ti-6Al-4V alloy with silicon carbide. Materials Science. 38 (5), 646-651.

Saresh N., Gopalakrishna Pillai M., Mathewa J. (2007). Investigations into the effects of electron beam welding on thick Ti-6Al-4V titanium alloy. Journal of Materials Processing Technology. 192-193, 83-88.

Yuan-Ching L., Yu-Chi L. (2011). Microstructure and tribological performance of Ti-6Al-4V cladding with SiC powder. Surface & Coatings Technology. 205, 5400-5405.

Archives of Foundry Engineering

The Journal of Polish Academy of Sciences

Journal Information

CiteScore 2016: 0.42

SCImago Journal Rank (SJR) 2016: 0.192
Source Normalized Impact per Paper (SNIP) 2016: 0.316

Cited By


All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 77 76 4
PDF Downloads 36 36 7