Femtosecond Laser Ablation of a Single Crystal Superalloy CMSX-4 in Different Environments


Article Preview

The femtosecond laser ablation has been investigated on second generation single crystal superalloy CMSX-4 using a commercial titanium:sapphire laser system (λ = 780nm, τ = 120 fs). The ablation thresholds of bulk alloy CMSX-4 have been determined as a function of the pulse number (1, 10, 100, 1000) in air, argon gas and vacuum. The results indicate that the multiple-pulse threshold of this material decreased with increasing the pulse number in all the cases. For the same pulse number, the threshold changed in the descending order: air, vacuum and argon gas. The incubation coefficient in air has been determined: ξ = 0.86 ± 0.03. The preliminary results showed the better quality of femtosecond laser machining of CMSX-4 in vacuum and argon gas than in air.



Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.




Q. Wen et al., "Femtosecond Laser Ablation of a Single Crystal Superalloy CMSX-4 in Different Environments", Materials Science Forum, Vols. 546-549, pp. 1309-1312, 2007

Online since:

May 2007




[1] C. Y. Yeo, S. C. Tam, S. Jana, M. W. S. Lau: J. Mater. Process. Technol. 42 (1994), p.15.

[2] Q. Feng, Y.N. Picard et al.: Scripta Materialia 53 (2005), p.511.

[3] Q. Feng, Y.N. Picard et al.: Materials Science and Engineering A, 430 (2006), P. 203.

[4] K. Sokolowski-Tinten, J. Bialkowski et al.: Phys. Rev. Lett. 81 (1998), p.224.

[5] N. Bulgakova, I.M. Bourakov: Appl. Surf. Sci. 197-198 (2002), p.41.

[6] A. Miotello, R. Kelly: Appl. Phys. A 69 (Suppl. ) (1999), p.67.

[7] J. Gudde, J. Hohlfeld, et al.: Appl. Sur. Sci. 127-129 (1998), p.40.

[8] C.S. Lee, N. Koumvakalis, M. Bass: Appl. Phys. Lett. 41 (1982), p.625.

[9] Y. Jee, M.F. Becker, R.M. Walser: J. Opt. Soc. Am. B 5 (1988), p.648.

[10] P.T. Mannion, J. Magee et al.: Applied Surface Science 233 (2004), pp.275-287.

Fetching data from Crossref.
This may take some time to load.