Metal treatment – Compositions – Heat treating
Patent
1990-03-22
1992-03-10
Roy, Upendra
Metal treatment
Compositions
Heat treating
420560, C22C 102
Patent
active
050947001
ABSTRACT:
A solder or brazing alloy having improved properties by reason of the presence of at least one uniformly dispersed non-acicular and non-dendritic intermetallic phase having a particle size of about 1 to 25 microns. A method of preparing the alloy comprises melting the alloy at a temperature sufficient to melt the intermetallic phase or phases, cooling to a semi-solid state, subjecting the semi-solid alloy to vigorous shearing and/or vibration at the solid-liquid interface, and solidifying the alloy.
REFERENCES:
patent: 3146097 (1964-08-01), Allen
patent: 3284192 (1966-11-01), Larson et al.
patent: 3599319 (1971-08-01), Weinsten
Hiedemann; Jour. Acoust. Soc. Amer. 26 (Sep. 1954) 831.
Roy Upendra
University of Cincinnati
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