In this study, TiAl alloy was coated on Ti64 using a 1074nm high power continuous-wave laser while varying the laser beam scanning speed. This was done in order to increase the thermo-mechanical properties of Ti64. Scanning electron microscopy (SEM), light optical microscopy, and Vickers’ micro-hardness were used to characterise the clad for macrostructure, composition, and hardness respectively. The macro- and micrographs of the clads indicated a needle- and dendritic-rich structure for the clads and widmanstatten structure at the interface for all the scanning speeds. The overall hardness was found to be high at low scanning speed.
Reference:
Masina, B.N. et al. 2017. Microstructure and mechanical characterisation of TiAl coated on Ti64. South African Journal of Industrial Engineering, vol. 28(3): 172-177
Masina, B. N., Lengopeng, T., Pityana, S. L., & Tlotleng, M. (2017). Microstructure and mechanical characterisation of TiAl coated on Ti64. http://hdl.handle.net/10204/10992
Masina, Bathusile N, Thabo Lengopeng, Sisa L Pityana, and Monnamme Tlotleng "Microstructure and mechanical characterisation of TiAl coated on Ti64." (2017) http://hdl.handle.net/10204/10992
Masina BN, Lengopeng T, Pityana SL, Tlotleng M. Microstructure and mechanical characterisation of TiAl coated on Ti64. 2017; http://hdl.handle.net/10204/10992.
