발간논문

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Vol.29, No.6, 562 ~ 570, 1991
Title
A Study on the Melting and Casting of TiAl Intermetallic Compound by VIM Process
박표준Pyo chun Park, 최창우Chang Woo Choi, 홍준표Chun Pyo Hong
Abstract
The chief roadblock to the application of titanium is melting and casting. During the last several years, a great deal of efforts has been made to improve the melting and casting processes of titanium. In this study, melting and casting of TiAl intermetallic compounds were conducted by the VIM(vacuum induction melting) process. In the VIM process, various crucibles were applied in order to investigate the condition of crucible reaction with titanium melt. The effects of A1 content on the microstructures and mechanical properties of TiAI intermetallic compounds were also studied. Melting crucible made from CaO + 5% CaF₂ was available for titanium melting. The volume fraction of lamellar structure in TiAl intermetallic compounds was found to be maximum at Ti-44at%A1 ingot.
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