pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (39권6호 110-115)
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
Seong-Il Song†, Joo-Heon Park, Byeong-Ju Jin and Kyoung-Don Lee
Al & Mechanical Center, Institute for Advanced Engineering, Youngin 17180, Republic of Korea
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 Ti6Al-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 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.
Numerical analysis, Phase transformation, Selective laser melting, Ti-6Al-4V
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