Processing materials with lasers
DOI: 10.1063/1.3024504
How can we make an alloy to fit a specific materials requirement? The oldest method of alloy fabrication, casting, has two inherent limitations: Phases with high melting points are difficult to melt; and the cooling of the alloys from the melt is slow, so that alloy segregation and phase separation have time to occur. The other traditional method, powder metallurgy, has helped with the second of these problems: Allowing the homogeneous melt to be cooled in tiny droplets makes it possible at least to limit segregation to the scale of the resulting powder particles.
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More about the authors
Edward M. Breinan, United Technologies Research Center, East Hartford.
Conrad M. Banas, United Technologies Research Center, East Hartford.
Bernard H. Kear, Pratt and Whitney Aircraft Group of United Technologies Corporation, Middletown, Connecticut.
