Method of fabricating thin-walled articles of tungsten-nickel-iron alloy

Patent · Fri Jan 01 04:00:00 EST 1982

OSTI ID:864223

The present invention relates to a method for fabricating thin-walled high-density structures oftungsten-nickel-iron alloys. A powdered blend of the selected alloy constituents is plasma sprayed onto a mandrel having the desired article configuration. The sprayed deposit is removed from the mandrel and subjected to liquid phase sintering to provide the alloyed structure. The formation of the thin-walled structure by plasma spraying significantly reduces shrinkage, and cracking while increasing physical properties of the structure over that obtainable by employing previously known powder metallurgical procedures.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
• DOE Contract Number: W-7405-ENG-26
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4332617
• OSTI ID: 864223
• Country of Publication: United States
• Language: English

Related Subjects

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alloy
alloyed
alloys
article
articles
blend
configuration
constituents
cracking
deposit
desired
desired article
employing
fabricating
fabricating thin-walled
formation
high-density
increasing
iron alloy
iron alloys
liquid
liquid phase
mandrel
metallurgical
method
obtainable
oftungsten-nickel-iron
phase
phase sintering
physical
physical properties
plasma
plasma spray
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plasma spraying
powder
powder metallurgical
powdered
previously
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properties
provide
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relates
removed
selected
shrinkage
significantly
significantly reduce
significantly reduces
sintering
sprayed
spraying
structure
structures
subjected
thin-walled
tungsten-nickel-iron
tungsten-nickel-iron alloy