This study presents an investigation of the effect of different heat treatments on the microstructure of Ti6Al4V fabricated components produced by high speed selective laser melting. 10 mm x 10 mm x 10 mm cubes were heat treated in an inert oven at temperatures of 700 °C and 950 °C. The samples were heat treated at their respective temperatures for 2 hours before air cooling to room temperature. Subsequent to heat treatment, the microstructures of the heat treated samples and the as-built were studied. The as-built sample showed a martensitic alpha phase which was also observed on the 700 °C sample. Elongated columnar grains were observed on the as-built and the 700 °C heat treated sample. Furthermore, a fully transformed lamella a+ß microstructure was observed for the 950 °C heat treated sample.
Reference:
Lekoadi, P.M. et al. 2018. Investigation of microstructural characteristics of heat treated high speed selective laser melting fabricated Ti6Al4V components. RAPDASA 2018 Conference, 6-9 November 2018, Protea Parktonian, Braamfontein, Johannesburg, pp. 161-169
Lekoadi, P. M., Maledi, N., Tlotleng, M., & Masina, B. N. (2018). Investigation of microstructural characteristics of heat treated high speed selective laser melting fabricated Ti6Al4V components. http://hdl.handle.net/10204/10701
Lekoadi, Paul M, N Maledi, Monnamme Tlotleng, and Bathusile N Masina. "Investigation of microstructural characteristics of heat treated high speed selective laser melting fabricated Ti6Al4V components." (2018): http://hdl.handle.net/10204/10701
Lekoadi PM, Maledi N, Tlotleng M, Masina BN, Investigation of microstructural characteristics of heat treated high speed selective laser melting fabricated Ti6Al4V components; 2018. http://hdl.handle.net/10204/10701 .