Method of preparing copper-dendritic composite alloys for mechanical reduction

Patent · Thu Dec 31 23:00:00 EST 1987

OSTI ID:866716

Verhoeven, John D ^[1]; Gibson, Edwin D ^[1]; Schmidt, Frederick A ^[1]; Spitzig, William A ^[1]

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1. Ames, IA

Copper-dendritic composite alloys are prepared for mechanical reduction to increase tensile strength by dispersing molten droplets of the composite alloy into an inert gas; solidifying the droplets in the form of minute spheres or platelets; and compacting a mass of the spheres or platelets into an integrated body. The spheres preferably have diameters of from 50 to 2000 .mu.m, and the platelets thicknesses of 100 to 2000 .mu.m. The resulting spheres or platelets will contain ultra-fine dendrites which produce higher strengths on mechanical reduction of the bodies formed therefrom, or comparable strengths at lower reduction values. The method is applicable to alloys of copper with vanadium, niobium, tantalum, chromium, molybdenum, tungsten, iron and cobalt.

• Research Organization: Ames Laboratory (AMES), Ames, IA; Iowa State University, Ames, IA (US)
• DOE Contract Number: W-7405-ENG-82
• Assignee: Iowa State University Research Foundation, Inc. (Ames, IA)
• Patent Number(s): US 4770718
• OSTI ID: 866716
• Country of Publication: United States
• Language: English

Related Subjects

/75/29/264/419/
100
2000
50
alloy
alloys
applicable
bodies
chromium
cobalt
compacting
comparable
composite
composite alloy
composite alloys
contain
copper
copper-dendritic
copper-dendritic composite
dendrites
diameters
dispersing
dispersing molten
droplets
form
formed
formed therefrom
gas
increase
inert
inert gas
integrated
iron
mass
mechanical
mechanical reduction
method
minute
molten
molten droplets
molybdenum
niobium
platelets
preferably
prepared
preparing
produce
reduction
resulting
solidifying
spheres
spheres preferably
strength
strengths
tantalum
tensile
tensile strength
therefrom
thicknesses
tungsten
ultra-fine
values
vanadium