Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
권호 표지
DOI QR코드

DOI QR Code

Comparative Study on Ablation Characteristics of Ti-6Al-4V Alloy and Ti2AlN Bulks Irradiated by Femto-second Laser

펨토초 레이저에 의한 티타늄 합금과 티타늄질화알루미늄 소결체의 어블레이션특성 비교연구

  • Hwang, Ki Ha (Graduate school of convergence science, Pusan National University) ;
  • Wu, Hua Feng (Graduate school of convergence science, Pusan National University) ;
  • Choi, Won Suk (Department of Laser & Electron Beam Application, Korea Institute of Machinery and Material) ;
  • Cho, Sung Hak (Department of Laser & Electron Beam Application, Korea Institute of Machinery and Material) ;
  • Kang, Myungchang (Graduate school of convergence science, Pusan National University)
  • 황기하 (부산대학교 융합학부) ;
  • 오화봉 (부산대학교 융합학부) ;
  • 최원석 (한국기계연구원 나노공정연구실) ;
  • 조성학 (한국기계연구원 나노공정연구실) ;
  • 강명창 (부산대학교 융합학부)
  • Received : 2019.05.27
  • Accepted : 2019.07.02
  • Published : 2019.07.31
Download PDF
⟨ Previous Next ⟩

Abstract

Mn+1AXn (MAX) phases are a family of nano-laminated compounds that possess unique combination of typical ceramic properties and typical metallic properties. As a member of MAX-phase, $Ti_2AlN$ bulk materials are attractive for some high temperature applications. In this study, $Ti_2AlN$ bulk with high density were synthesized by spark plasma sintering method. X-ray diffraction, micro-hardness, electrical and thermal conductivity were measured to compare the effect of material properties both $Ti_2AlN$ bulk samples and a conventional Ti-6Al-4V alloy. A femto-second laser conditions were conducted at a repetition rate of 6 kHz and laser intensity of 50 %, 70% and 90 %, respectively, laser confocal microscope were used to evaluate the width and depth of ablation. Consequently, the laser ablation result of the $Ti_2AlN$ sample than that of the Ti-6Al-4V alloys show a considerably good ablation characteristics due to its higher thermal conductivity regardless of to high densification and high hardness.

Keywords

References

  1. Heo, J. Y., Jeong, Y. K., Kang, M. C., and B. Ahmed, "Machinability Evaluation of Hybrid $Ti_2AlN$ Ceramic Composites with Conductivity in Micro Electrical Discharge Drilling Operation," Journal of Korean Powder Metallurgy Institute, Vol. 20, No. 4, 2013.
  2. Choi, E. S., Lee, C. H., Baek, G. R., Kim, K. H., and Kang, M. C., "Characteristics of Material Properties and Machining Surface in Electrical Discharge Machining of $Ti_2AlN$ and $Ti_2AlC$ Materials," Journal of Korean Powder Metallurgy Institute, Vol. 22, pp. 163-168, 2015. https://doi.org/10.4150/KPMI.2015.22.3.163
  3. Ezugwu, E. O., Wang, Z. M., "Titanium alloys and their machinability a review," J. Materals Process. Tech, Vol. 68, pp. 262-274, 1997. https://doi.org/10.1016/S0924-0136(96)00030-1
  4. Wang, X. H., Zhou, Y. C., "Layered Machinable and Electrically Conductive $Ti_2AlC$ and $Ti_3AlC_2$Ceramics: a Review," Journal of materials processing technology, Vol. 26, 2010.
  5. Liu, G. Chen, K. Zhou, H., Guo, J., Ren, K. and Ferreira, J. M. F. "Layered growth of $Ti_2AlC$ and $Ti_3AlC_2$ in combustion synthesis," Mater. Lett., Vol. 61, pp.779-784, 2007. https://doi.org/10.1016/j.matlet.2006.05.060
  6. Marharjan, N., "Ablation morphology and ablation threshold of Ti-6Al-4V alloy during femtosecond laser processing," Applied Physics A, 2018.
  7. Shin, H. S., Jeong, W. J., Kim, D. S., "Femtosecond laser micromachining of zirconia green bodies", International Journal of Additive and Subtractive Materials Manufacturing,, Vol. 1, No. 1, 2017.

Cited by

  1. 초단 펄스레이저 어블레이션에 의한 스테인리스강 표면의 오염산화막 제거 특성 vol.19, pp.10, 2019, https://doi.org/10.14775/ksmpe.2020.19.10.105