An examination of the factors influencing the melting of solid titanium in liquid titanium

• Published in: International journal of heat and mass transfer Vol. 86; pp. 221 - 233
• Main Authors: Ou, Jun, Cockcroft, Steve L., Maijer, Daan M., Yao, Lu, Reilly, Carl, Akhtar, Ainul
• Format: Journal Article
• Language: English
• Published: 01.07.2015
• Subjects: Dipping; Freezing; Frozen; Liquids; Mass transfer; Melting; Rods; Titanium
• ISSN: 0017-9310
• DOI: 10.1016/j.ijheatmasstransfer.2015.02.054

The melting behavior of a solid in liquid titanium has been investigated with the aid of an Electron Beam Button Furnace (EBBF) to understand the phenomena contributing to the melting of exogenous solids introduced into liquid titanium during melt processing and casting. In this work, cylindrical rods of commercial purity (CP) titanium were dipped into a molten CP titanium pool for various periods of time to investigate the melting behavior in the absence of compositional effects. The dimensions of the dipped rods were measured before and after various immersion times allowing for quantification of the evolution of the solid/liquid interface and melting rate. The results show that the liquid titanium initially freezes onto the cold rod sample when it was immersed, resulting in the formation of a solid/solid interface between the immersed rod and the frozen titanium. After a short period of time, the frozen titanium melted followed by melting of the rod.