DOI QR코드

DOI QR Code

Fabrication of Titanium alloy by Electromagnetic Continuous Casting (EMCC) Method for Medical Applications

전자기 연속 주조법을 이용한 의료용 타이타늄 합금 제작에 관한 연구

  • Choi, Su-Ji (Liquid Processing & Casting Technology R&D Group, Korea Institute of Industrial Technology) ;
  • Lee, Hyun-Jae (Liquid Processing & Casting Technology R&D Group, Korea Institute of Industrial Technology) ;
  • Baek, Su-Hyun (Liquid Processing & Casting Technology R&D Group, Korea Institute of Industrial Technology) ;
  • Hyun, Soong-Keun (Advanced Materials Engineering, Inha University) ;
  • Jung, Hyun-Do (Liquid Processing & Casting Technology R&D Group, Korea Institute of Industrial Technology) ;
  • Moon, Byung-Moon (Liquid Processing & Casting Technology R&D Group, Korea Institute of Industrial Technology)
  • 최수지 (한국생산기술연구원 주조공정그룹) ;
  • 이현재 (한국생산기술연구원 주조공정그룹) ;
  • 백수현 (한국생산기술연구원 주조공정그룹) ;
  • 현승균 (인하대학교 신소재공학과) ;
  • 정현도 (한국생산기술연구원 주조공정그룹) ;
  • 문병문 (한국생산기술연구원 주조공정그룹)
  • Received : 2017.09.01
  • Accepted : 2017.12.07
  • Published : 2018.02.28

Abstract

Electromagnetic continuous casting (EMCC) was used to fabricate Ti-6Al-4V alloys with properties suitable for medical applications. Ti-6Al-4V alloy ingots fabricated by EMCC were subjected to heat treatment, such as residual stress removing (RRS), furnace cooling after solution treatment (ST-FC) and water-cooling after solution treatment (ST-WC), in order to obtain characteristics suitable for the standard. After component analysis, the microstructure and mechanical properties (tensile strength and elongation) were evaluated by ICP, gas analysis, OM, SEM, a Rockwell hardness tester and universal testing machine. The Ti-6Al-4V alloy ingot fabricated by EMCC was fabricated without segregation, and the lamellar structure was observed in the RRS and ST-FC specimens. The ST-WC specimen showed only martensite structure. As a result of evaluating the mechanical properties based on the microstructure results, we found that the water-cooled heat treatment condition after the solution treatment was most suitable for the Ti-6Al-4V ELI standard.

Keywords

Acknowledgement

Grant : 골재생을 위한 금속 임플란트를 기반으로 한 장기방출형 이중약물전달 시스템 연구

Supported by : 한국연구재단

References

  1. Christoph Leyens and Manfred Peters, Titanium and titanium alloys: fundamentals and applications, John Wiley & Sons, NY (2003).
  2. Geetha M, Singh A.K, Asokamani R and Gogia A.K, Progress in Materials Science, "Ti based biomaterials, the ultimate choice for orthopaedic implants - A review", 54 (2009) 397-425. https://doi.org/10.1016/j.pmatsci.2008.06.004
  3. Akahori Toshikazu and Niinomi Mitsuo, Materials Science & Engineering, "Fracture characteristics of fatigued Ti-6Al-4V ELI as an implant material", A 243 (1998) 237-243.
  4. A Mitchell, Materials Science & Engineering, "Melting, casting and forging problems in titanium alloys", A243 (1998) 257-262.
  5. Matthew J. Donachie, Titanium: a technical guide, ASM international, OH (2000) 55-60.
  6. Sakamoto Koichi, Yoshikawa Katsuyuki, Kusamichi Tatsuhiko and Onoye Toshio, ISIJ International, "Changes in oxygen contents of titanium aluminides by vacuum induction, cold crucible induction and electron beam melting", 32 (1992) 616-624. https://doi.org/10.2355/isijinternational.32.616
  7. Lee YT, Titanium, The Korea Metal Journal, Seoul (2009) 480-482.
  8. B.G. Thomas, Continuous Casting, Yearbook of Science and Technology, McGraw-Hill, NY (2004).
  9. Negrini F, Fabbri M, Zuccarini M, Takeuchi E and Tani M, Energy Conversion and Management, "Electromagnetic control of the meniscus shape during casting in a high frequency magnetic field", 41 (2000) 1687-1701. https://doi.org/10.1016/S0196-8904(99)00185-5
  10. Park JP, Kim MG, Yoon US and Kim WJ, Journal of Materials Science, "Microstructures and mechanical properties of Mg-Al-Zn-Ca alloys fabricated by high frequency electromagnetic casting method", 44 (2009) 47-54. https://doi.org/10.1007/s10853-008-3130-z
  11. ASTM F136 - Standard Specification for Wrought Titanium-6Aluminum-4Vanadium ELI (Extra Low Interstitial) Alloy for Surgical Implant Applications (UNS R56401), ASTM International, West Conshohocken, USA (2013).
  12. ASTM E8/E8M - Standard Test Methods for Tension Testing of Metallic Materials, ASTM International, West Conshohocken, USA (2013).
  13. ISO 6508-1:2015(E)- Metallic materials -- Rockwell hardness test -- Part 1: Test method, International standard, Switzerland (2015).
  14. Boyer, Rodney, Collings, E.W., Materials Properties Handbook : Titanium Alloys, ASM International, OH (1995) 23-33.
  15. Luther M. Gammon and et al., Metallography and microstructures of titanium and its alloys., ASM International, OH (2004) 899-917.
  16. Dong, Junzhe, Fuguo Li and Chengpeng Wang, Materials Science and Engineering, "Micromechanical behavior study of ${\alpha}$ phase with different morphologies of Ti-6Al-4V alloy by microindentation.", A 580 (2013) 105-113.
  17. Lutjering, G, Materials Science and Engineering, "Influence of processing on microstructure and mechanical properties of (${\alpha}+{\beta}$) titanium alloys.", A 243 (1998) 32-45.
  18. Chan, Kwai S., Marie Koike and Toru Okabe, Acta biomaterialia, "Modeling wear of cast Ti alloys." 3 (2007) 383-389. https://doi.org/10.1016/j.actbio.2006.10.007