Prospects for titanium alloy comparison control by electron beam scan frequency manipulation
- Massachusetts Institute of Technology, Cambridge, MA (United States)
- Sandia National Labs., Albuquerque, NM (United States)
Using mathematical modelling, the authors evaluate the prospects for using beam spot size and scan frequency to control titanium-aluminum alloy composition in electron beam melting and refining. Composition control is evaluated in terms of attainable steady-state extremes of composition, and the time scales required to change hearth and mold composition between those extremes. Mathematical models predict spot size-evaporation and frequency-evaporation relationships by simulating heat transfer in the surface of the melt, and predict overall composition change using simplifying assumptions about the fluid flow field in a melting hearth. Corroborating experiments were run on the electron beam furnace at Sandia National Laboratories in order to verify predicted relationships between frequency and evaporation and to calculate activity coefficients of aluminum and vanadium in titanium.
- OSTI ID:
- 577618
- Report Number(s):
- CONF-961079--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Simulation of multicomponent evaporation in electron beam melting and refining
Simulation of multicomponent losses in electron beam melting and refining at varying scan frequencies