Directional solidification of alloys in systems containing a liquid miscibility gapThe problem considered is the unidirectional growth of alloys close to monotectic composition and within the miscibility gap when the direction of gravity is down the temperature gradient (solidification upwards) or up the temperature gradient (solidification downwards). The systems Al-In and Al-Bi are taken as examples. With solidification upwards it is shown that bulk liquid composition adjusts to that of the monotectic while in the reverse situation, the bulk liquid gradually rises. In the former case it is possible to grow aligned fibrous structures of monotectic composition but in the latter the microstructures are irregular and globular.
Document ID
19830062087
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Grugel, R. N. (Michigan Technological Univ. Houghton, MI, United States)
Lograso, T. A. (Michigan Technological Univ. Houghton, MI, United States)
Hellawell, A. (Michigan Technological University Houghton, MI, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1982
Subject Category
Astronautics (General)
Meeting Information
Meeting: Materials processing in the reduced gravity environment of space; Annual Meeting