Abstract
Electromagnetic levitation has been used to melt and undercool Ni 100− x B x alloys ( x = 0.7, 1.0). Dendrite growth velocities in the levitated droplets have been measured as a function of undercooling. Owing to the extremely small solubility of boron in solid nickel, the growth velocities in the alloys are much lower than those in pure nickel. At a critical undercooling ΔT ∗ a sudden rise in the growth velocities with increasing undercooling is observed, indicating a transition from growth controlled both by solutal and thermal diffusion to a purely thermally controlled and segregation free growth of the supersaturated NiB dendrites.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
