Material Characterization of Alloy for Aerospace Application: Effect of Laser Power on the Co-axially Deposited T64 Alloy and Cu

M. F. Erinosho*, E. T. Akinlabi, K. O. Oladosu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


In this research work, 10 wt. % Cu was deposited with 90 wt. % T64 alloy via the laser system. The deposition was performed on an ytterbium laser system with a maximum operating power of 3 kW. The effect of laser power on the laser-deposited T64 + 10 wt. % Cu was investigated. Microstructural analysis and microhardness profiling of the deposited samples were examined. Basket-weave-like Widmanstätten structures were observed in the heat-affected zone of the deposit, and these occur as a result of the cooling rate; however, it increases as the laser power was increased. The average microhardness values were obtained and sample 1 deposited at the laser power of 1000 Watts had the lowest hardness value of HV 309 ± 7, while the highest hardness value of HV 573 ± 7 was obtained for sample 4 deposited at the laser power of 1600 watts. Response surface methodology (RSM) was also implemented using the Design-Expert 11 software to determine the optimum and desirable parameters. The properties of the T64 alloy were improved with the addition of 10 wt.% Cu, and this can be recommended for the engine block of an aerospace application to serve as fire resistant.

Original languageEnglish
Title of host publicationAdvanced Composites in Aerospace Engineering Applications
EditorsNorkhairunnisa Mazlan, S.M. Sapuan, R.A. Ilyas
Place of PublicationCham, Switzerland
Number of pages12
ISBN (Electronic)9783030881924
ISBN (Print)9783030881917, 9783030881948
Publication statusPublished - 22 Feb 2022
Externally publishedYes

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