Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on Selective Laser Melting Process Considering Phase Transformation for Ti-6Al-4V

Ti-6Al-4V 합금에서 상 변화를 고려한 Selective Laser Melting 프로세스 연구

  • Song, Seong-Il (Al & Mechanical Center, Institute for Advanced Engineering) ;
  • Park, Joo-Heon (Al & Mechanical Center, Institute for Advanced Engineering) ;
  • Jin, Byeong-Ju (Al & Mechanical Center, Institute for Advanced Engineering) ;
  • Lee, Kyoung-Don (Al & Mechanical Center, Institute for Advanced Engineering)
  • 송성일 (고등기술연구원 지능기계시스템센터) ;
  • 박주헌 (고등기술연구원 지능기계시스템센터) ;
  • 진병주 (고등기술연구원 지능기계시스템센터) ;
  • 이경돈 (고등기술연구원 지능기계시스템센터)
  • Received : 2019.11.20
  • Accepted : 2019.12.13
  • Published : 2019.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

Recently, various studies have been conducted on additive manufacturing technology developed using metal materials. In this study, a numerical analysis was introduced to analyze the effects of the thermal deformation and residual stress which arise during the SLM (selective laser melting) manufacturing process. A phase-transformation mechanism is implemented with the use of the Ti-6Al-4V material, in which a solid-state phase transformation (SSPT) can be induced during a numerical analysis. In this case, the phase of the Ti-6Al-4V material changes from a powder to a solid state and then to the Martensite phase in sequence during heating and cooling steps. The numerical analysis during the SLM process was verified by comparing the results of tensile tests with those from the numerical analysis based on the SSPT material properties.

Keywords

References

  1. E.Olakanmi, Journal of Materials Processing Technology, "Selective laser sintering/melting (SLS/SLM) of pure Al, Al- Mg, and Al-Si powders: effect of processing conditions and powder properties", 213 (2013) 1387-1405. https://doi.org/10.1016/j.jmatprotec.2013.03.009
  2. E.Olakanmi, K.Dalgarno and R.Cochrane, Rapid Prototyping Journa, "lLaser sintering of blended Al-.Si powders", 18 (2012) 109-119. https://doi.org/10.1108/13552541211212096
  3. A.Simchi and H.Pohl, Materials Science and Engineering: A, "Effect of laser sintering processing parameters on the microstructure and densification of iron powder", 359 (2003) 119-128. https://doi.org/10.1016/S0921-5093(03)00341-1
  4. M.Dewidar, K.Dalgarno and C.Wright, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, "Processing conditions and mechanical properties of high-speed steel parts fabricated using direct selective laser sintering", 217 (2003) 1651-1662. https://doi.org/10.1243/095440503772680587
  5. Roberts, I. A., Wang, C. J., Esterlein, R., Stanford, M. and Mynors, D. J, International Journal of Machine Tools & Manufacture, "A Three-Dimensional Finite Element Analysis of the Temperature Field during Laser Melting of Metal Powders in Additive Layer Manufacturing", 49 (2009) 916-923. https://doi.org/10.1016/j.ijmachtools.2009.07.004
  6. C.Li, C.H. Fu, Y.B. Guo and F.Z. Fang, Journal of Materials Processing Technology, "A multiscale modeling approach for fast prediction of part distortion in selective laser melting", 229 (2016) 703-712. https://doi.org/10.1016/j.jmatprotec.2015.10.022
  7. Lore Thijs, Frederik Verhaeghe, Tom Craeghs, Jan Van Humbeek and Jean-Pierre Kruth, Sience Direct, "A study of the microstructural evolution during selective laser melting of Ti-6Al-4V", 58 (2010) 3303-3312.
  8. Chun CK and Kim SW, Journal of Welding and Joining, "The effect of heat treatment on microstructure and mechanical behaviors of laser direct energy deposited Ti-6Al-4V plate", 36 (2018) 75-80. https://doi.org/10.5781/JWJ.2018.36.5.10
  9. Pengfei Tan, Fei Shen, Biao Li and Kun Zhou, Material & Design, "A thermo-metallurgical-mechanical model for selective laser melting of Ti6Al4V", 165 (2019)
  10. ABAQUS Documentaion User's Guide, (2017).