pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (38권1호 9-15)
Fabrication of Titanium alloy by Electromagnetic Continuous Casting (EMCC) Method for Medical Applications
전자기 연속 주조법을 이용한 의료용 타이타늄 합금 제작에 관한 연구
Su-Ji Choi*,**, Hyun-Jae Lee*,***, Su-Hyun Baek*,****, Soong-Keun Hyun**, Hyun-Do Jung*† and Byung-Moon Moon*†
*Liquid Processing & Casting Technology R&D Group, Korea Institute of Industrial Technology, **Advanced Materials Engineering, Inha University,***Department of Material Science and Engineering, Seoul National University,****Department of Materials Science
Electromagnetic continuous casting (EMCC) was used to fabricate Ti-6Al-4V alloys w with properties suitable for medical applications. Ti-6Al-4V alloy ingots fabricated by EMCC were subjected to heat treatment, such as r 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 m 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 m mechanical properties based on the microstructure results, we found that the water-cooled heat treatment condition after t the solution treatment was most suitable for the Ti-6Al-4V ELI standard.
Ti-6Al-4V alloy, EMCC method, Alloying, Microstructure, Mechanical properties
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