Titanium aluminides (TiAl) are acknowledged as promising high temperature structural materials due to their high melting point, high strength to density, high elastic modulus and high creep strength. Due to their low ductility, it is difficult to machine post manufacturing with conventional manufacturing techniques. TiAl components have been successfully produced using the cast methods, but prove to be very expensive and time consuming. In situ alloying, using laser processing, is a potential method of manufacture of these alloys; as elemental powders can be fed separately from different powder feeders and the feed rate can be controlled, independently, to control the composition and resulting microstructure.
Reference:
Hoosain, S.E. et al. 2017. A comparative study on laser processing of commercially available titanium aluminide (TI-48AL-2CR-2NB) and in-situ alloying of titanium aluminide. 18th Annual International Rapid Product Development Association of South Africa (RAPDASA), 7-10 November 2017, Durban ICC, South Africa
Hoosain, S. E., Pityana, S. L., Tlotleng, M., & Legopeng, T. (2017). A comparative study on laser processing of commercially available titanium aluminide (TI-48AL-2CR-2NB) and in-situ alloying of titanium aluminide. http://www.rapdasa.org. http://hdl.handle.net/10204/9805
Hoosain, Shaik E, Sisa L Pityana, Monnamme Tlotleng, and T Legopeng. "A comparative study on laser processing of commercially available titanium aluminide (TI-48AL-2CR-2NB) and in-situ alloying of titanium aluminide." (2017): http://hdl.handle.net/10204/9805
Hoosain SE, Pityana SL, Tlotleng M, Legopeng T, A comparative study on laser processing of commercially available titanium aluminide (TI-48AL-2CR-2NB) and in-situ alloying of titanium aluminide; http://www.rapdasa.org; 2017. http://hdl.handle.net/10204/9805 .
Paper presented at the 18th Annual International Rapid Product Development Association of South Africa (RAPDASA), 7-10 November 2017, Durban ICC, South Africa