Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Microstructure of Ti-6Al-4V alloy

Ti-6Al-4V 합금의 미세구조 분석

  • Kim, Tae Wan (Department of Materials Science and Engineering, Korea National University of Transportation) ;
  • Yoon, Yo Han (Department of Materials Science and Engineering, Korea National University of Transportation) ;
  • Oh, Ho Ra (Department of Materials Science and Engineering, Korea National University of Transportation) ;
  • Park, Jong Bum (Department of Materials Science and Engineering, Korea National University of Transportation) ;
  • Lee, Jung-Il (Department of Materials Science and Engineering, Korea National University of Transportation) ;
  • Ryu, Jeong Ho (Department of Materials Science and Engineering, Korea National University of Transportation)
  • 김태완 (한국교통대학교 신소재공학과) ;
  • 윤요한 (한국교통대학교 신소재공학과) ;
  • 오호라 (한국교통대학교 신소재공학과) ;
  • 박종범 (한국교통대학교 신소재공학과) ;
  • 이정일 (한국교통대학교 신소재공학과) ;
  • 류정호 (한국교통대학교 신소재공학과)
  • Received : 2016.05.30
  • Accepted : 2016.06.17
  • Published : 2016.06.30
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Abstract

Ti alloys have been used for orthopedic devices, automobile and aircraft because it has several beneficial properties such as a low density, a low modulus of elasticity, excellent high-temperature strength, excellent corrosion resistance and biocompatibility. In this study, Ti-64 composition (6 wt% Al, 4 wt% V) is investigated as a representative Ti-alloy system on the crystallographic characteristics and microstructure. We investigated crystal structure of the Ti-64 sample by XRD, and analyzed microstructure by compositional differences measured using FE-SEM and EDX.

Ti-합금은 낮은 밀도, 낮은 탄성계수, 우수한 고온강도, 내산화성 및 인체적합성으로 자동차와 항공산업 및 바이오 산업에서 구조용 재료로 널리 연구되고 있다. 본 연구에서는 Ti-합금 중 대표적인 조성인 Ti-64(6 wt% Al, 4 wt% V) 합금에 대한 결정학적 특성과 미세조직에 대해서 알아보고자 하였다. XRD 분석을 통하여 Ti-64 샘플의 주요 결정상을 분석하였고, FE-SEM 및 EDX 분석을 통하여 Ti-64 합금 샘플의 미세구조를 화학조성의 차이에 의해 고찰하였다.

Keywords

References

  1. Y.H. Lee, J.T. Yeom, N.K. Park, S.S. Hong, I.O. Shim, S.M. Hwang and C.S. Lee, "Prediction of microstructure durign high temperature forming of Ti-6Al-4V alloy", J. Kor. Inst. Met. & Mater. 43 (2005) 847.
  2. D.-G. Lee, Y.H. Lee, C.S. Lee and S. Lee, "Effect of volume fraction of tempered martensite on dynamic deformation properties of Ti-6Al-4V alloy having bimodal microstructure", J. Kor. Inst. Met. & Mater. 42 (2004) 455.
  3. S.G. Pyo, J.K. Oh, N.J. Kim and M. Yamaguchi, "Al compositional dependence on the deformation behavior and mechanical properties in ultra high purity TiAl alloys", J. Kor. Inst. Met. & Mater. 38 (2000) 629.
  4. I.-S. Jung, M.-C. Kim, J.-H. Lee, M.-H. Oh and D.-M. Wee, "Phase equilibria of TiAl alloy by directional solidification", J. Kor. Inst. Met. & Mater. 37 (1999) 448.
  5. X Wu, "Review of alloy and process development of TiAl alloys", Intermetallics 14 (2006) 1114. https://doi.org/10.1016/j.intermet.2005.10.019
  6. M. Geetha, A.K. Singh, R. Asokamani and A.K. Gogia, "Ti based biomaterials, the ultimate choice for orthopaedic implants - A review", Prog. Mater. Sci. 54 (2009) 397. https://doi.org/10.1016/j.pmatsci.2008.06.004
  7. S.L.R. da Silva, L.O. Kerber, L. Amaral and C.A. dos Santos, "X-ray diffraction measurements of plasmanitrided Ti-6Al-4V", Surf. Coat. Tech. 116-119 (1999) 342. https://doi.org/10.1016/S0257-8972(99)00204-2
  8. J.J. Lin, Y.H. Lv, Y.X. Liu, B.S. Xub, Z. Sun, Z.G. Li and Y.X. Wu, "Microstructural evolution and mechanical properties of Ti-6Al-4V wall deposited by pulsed plasma arc additive manufacturing", Mater. Des. 102 (2016) 30. https://doi.org/10.1016/j.matdes.2016.04.018
  9. G.A. Ravi, C. Qiu and M.M. Attallah, "Microstructural control in a Ti-based alloy by changing laser processing mode and power during direct laser deposition", Mater. Lett. 179 (2016) 104. https://doi.org/10.1016/j.matlet.2016.05.038
  10. D. Batalu, G. Cosmeleata and A. Aloman, "Critical analysis of the Ti-Al phase diagrams", U.P.B. Sci. Bull., Series B 68 (2006) 77.