Method of increasing magnetostrictive response of rare earth-iron alloy rods

Patent · Tue Apr 04 00:00:00 EDT 1989

OSTI ID:7268702

Verhoeven, J D; McMasters, O D; Gibson, E D; Ostenson, J E; Finnemore, D K

This invention comprises a method of increasing the magnetostrictive response of rare earth-iron (RFe) magnetostrictive alloy rods by a thermal-magnetic treatment. The rod is heated to a temperature above its Curie temperature, viz. from 400 to 600 C; and, while the rod is at that temperature, a magnetic field is directionally applied and maintained while the rod is cooled, at least below its Curie temperature. 2 figs.

• DOE Contract Number: W-7405-ENG-82
• Assignee: Iowa State Univ. Research Foundation, Inc., Ames, IA (United States)
• Patent Number(s): US 4818304; A
• Application Number: PPN: US 7-110974
• OSTI ID: 7268702
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
FABRICATION
HEAT TREATMENTS
IRON ALLOYS
MAGNETIC PROPERTIES
MAGNETOSTRICTION
MATERIALS WORKING
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
THERMOMECHANICAL TREATMENTS