Solder and brazing alloys having improved properties and method

Details Solder and brazing alloys having improved properties and method Solder and brazing alloys having improved properties and method

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.

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