Continuous method for manufacturing grain-oriented magnetostrictive bodies

Patent · Tue Sep 13 04:00:00 EDT 1988

OSTI ID:5542744

Gibson, E D; Verhoeven, J D; Schmidt, F A; McMasters, O D

This patent describes a continuous casting and crystallization method for manufacturing grain-oriented magnetostrictive bodies. It comprises: melting and mixing a quantity of a rare earth-iron magnetostrictive alloy in a crucible enclosed within an upper portion of a downwardly-extending chamber by applied induction heating. The crucible having an outlet port through its bottom wall with openable closure means associated therewith; depositing a portion of the resulting melt through the outlet port into the open top of at least one vertically-elongated mold tube positioned below the crucible, and removing heat from the deposited melt through the lower end portion of the mold tube to progressively solidify the melt, a solid-liquid interface moving upwardly from the bottom to the top of the melt and producing a solidified magnetostrictive body having an axial grain orientation, whereby grain-oriented magnetostrictive bodies are produced without using a sequence of casting, zone melting, and recrystallization steps.

• Assignee: Iowa State Univ. Research Foundation Inc., Ames, IO (USA)
• Patent Number(s): US 4770704; A
• Application Number: PPN: US 7-025572A
• OSTI ID: 5542744
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360104 -- Metals & Alloys-- Physical Properties
ALLOYS
CASTING
CRYSTAL STRUCTURE
CRYSTALLIZATION
FABRICATION
GRAIN ORIENTATION
INTERFACES
IRON ALLOYS
MAGNETIC PROPERTIES
MAGNETOSTRICTION
MANUFACTURING
MELTING
MICROSTRUCTURE
ORIENTATION
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE EARTH ALLOYS