Eutectic structures of Ag-Cu after melting and solidification in microgravity and on earth - Springer
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Eutectic structures of Ag-Cu after melting and solidification in microgravity and on earthF. BarbieriAffiliated withDepartment of Physics, University of Bologna, C. PatuelliAffiliated withDepartment of Physics, University of Bologna
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Solidification of Metal Matrix CompositesDoru Michael StefanescuAffiliated withMetallurgical and Materials Engineering, The University of AlabamaMaterials Science and Engineering, The Ohio State University
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Solidification of Undercooled Monotectic AlloysSolidification of Undercooled Monotectic Alloys
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Table of Contents - Volume &9&
- Symposium G – Materials Processing in the Reduced Gravity Environment of Space
: G.E. Rindone
ArticlesSolidification of Undercooled Monotectic Alloys1981 MRS Meeting.Article&author&queryperepezko&jh&galaup&c&cooper&kp&J. H. Perepezkoa1, C. Galaupa2 and K. P. Coopera1a1
University of Wisconsin-Madison, Department of Metallurgical and Mineral Engineering, 1509 University Avenue., Madison, WI 53706, U.S.A;a2
Centre de Recherches de Pont-à-Mousson, Maidieres 54700, Pont-à-Mousson, France.ABSTRACTDuring the processing of monotectic alloys large compositional segregation of the liquid can precede final solidification. Under normal treatment a coarse scale phase distribution is obtained as a result of convection and sedimentation effects which may be minimized by microgravity processing. In undercooled droplets (5) of Bi-Ga alloys with compositions near the monotectic point, a finescale segregation has been observed and is similar to that formed during a microgravity treatment of bulk samples. Near the critical point of the miscibility gap, Bi-rich alloys exhibit an undercooling prior to phase separation, while in Ga-rich alloys the onset of phase separation is at the miscibility gap boundary. Similarly, in Cu-Pb alloys an undercooling below the miscibility gap prior to phase separation is observed for Cu-rich alloys, but not for Pb-rich alloys near the critical point. These observations are consistent with the operation of a critical point wetting behavior which can modify the liquid segregation pattern during microgravity treatment.
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@inproceedings{OPL:8088268,author = {Perepezko,J. H. and Galaup,C. and Cooper,K. P.},title = {Solidification of Undercooled Monotectic Alloys},booktitle = {Symposium G – Materials Processing in the Reduced Gravity Environment of Space},series = {MRS Proceedings},volume = {9},year = {1981},pages = {491 (11 pages)}doi = {10.1557/PROC-9-491},URL = {http://journals.cambridge.org/article_S3302},}
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&div style="background: #FFFFFF; margin: 0 10px 10px 0; padding: 0 10px 0 0; text-align: font-family: Arial, Helvetica, sans- line-height: 1"&&div style="font-size: 11 padding: 0px 0px 10px 0 font-weight: color: #045989;"&Solidification of Undercooled Monotectic Alloys&/div&&div style="font-size: 11"&&b&J. H. Perepezko,C. Galaup and K. P. Cooper (1981). &/b&&br /&&a href=&http://journals.cambridge.org/action/displayJournal?jid=OPL&&MRS Proceedings&/a&, &a href=&http://journals.cambridge.org/action/displayJournal?jid=OPL&volumeId=9&bVolume=y#loc9&
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Solidification of Undercooled Monotectic Alloys
J. H. Perepezko,
and K. P. Cooper 1981
MRS Proceedings,
http://journals.cambridge.org/abstract_S3302
J. H. Perepezko,
and K. P. Cooper
Solidification of Undercooled Monotectic Alloys.
MRS Proceedings,
doi:10.1557/PROC-9-491.
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, March 1994, Pages 355-408
Rapid solidification processing
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Mail Stop G-770, Los Alamos National Laboratory, Los Alamos, NM 87505 USA
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Materials Science Program, University of California, San Diego, La Jolla, CA
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It has been over eight years since the subject of rapid solidification processing (RSP) has been given a general review. The early reviews of RSP were undertaken before the very rapid expansion of the late 1970s and early 1980s and the most recent general review was published in 1984, at approximately the height of RSP activity in the USA. More recent specialized reviews have been prepared for magnesium, titanium and aluminium alloys. The expansion of research and application testing resulted from the first major attempts to employ RSP on a large scale under both industrial and government sponsorship. The objective here is to develop the historical background of RSP, and then to update the present theoretical base for this technology. Examples of recent work on the rapid solidification of metals and ceramics will be given, along with examples of applications. Finally, an assessment of the future directions and prospects for RSP will be presented.
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