GB446894A - Improvements in or relating to alloys for permanent magnets - Google Patents

Improvements in or relating to alloys for permanent magnets

Info

Publication number
GB446894A
GB446894A GB2277734A GB2277734A GB446894A GB 446894 A GB446894 A GB 446894A GB 2277734 A GB2277734 A GB 2277734A GB 2277734 A GB2277734 A GB 2277734A GB 446894 A GB446894 A GB 446894A
Authority
GB
United Kingdom
Prior art keywords
per cent
alloys
aluminium
nickel
elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2277734A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DARWINS Ltd
Original Assignee
DARWINS Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DARWINS Ltd filed Critical DARWINS Ltd
Priority to GB2277734A priority Critical patent/GB446894A/en
Publication of GB446894A publication Critical patent/GB446894A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/78—Combined heat-treatments not provided for above
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

Permanent magnets are made by rapidly cooling from 1000-1350 DEG C. and reheating to 600-800 DEG C. alloys containing 5-20 per cent of aluminium, 5-45 of nickel and the balance iron with or without one or more added elements not adversely affecting the magnetic properties of the alloy to any material extent, in which alloys are incorporated up to 2 per cent of silicon or up to 5 per cent of titanium or both. The elements which may be added are cobalt up to 20 per cent, molybdenum up to 5, copper up to 15, manganese up to 5, tungsten up to 5 and vanadium up to 5, the total proportion of such elements not exceeding 30 per cent. In an example, alloys containing 32 per cent of nickel, 12 of aluminium and 0.5 of silicon was quenched from 1000 DEG C. and reheated to 750 DEG C. and another containing 32 of nickel, 12 of aluminium and 2 of titanium was similarly treated.
GB2277734A 1934-08-04 1934-08-04 Improvements in or relating to alloys for permanent magnets Expired GB446894A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2277734A GB446894A (en) 1934-08-04 1934-08-04 Improvements in or relating to alloys for permanent magnets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2277734A GB446894A (en) 1934-08-04 1934-08-04 Improvements in or relating to alloys for permanent magnets

Publications (1)

Publication Number Publication Date
GB446894A true GB446894A (en) 1936-05-04

Family

ID=10184906

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2277734A Expired GB446894A (en) 1934-08-04 1934-08-04 Improvements in or relating to alloys for permanent magnets

Country Status (1)

Country Link
GB (1) GB446894A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499861A (en) * 1948-03-16 1950-03-07 Crucible Steel Co America Permanent magnets and alloys therefor
US2499860A (en) * 1946-10-03 1950-03-07 Crucible Steel Co America Production of permanent magnets and alloys therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499860A (en) * 1946-10-03 1950-03-07 Crucible Steel Co America Production of permanent magnets and alloys therefor
US2499861A (en) * 1948-03-16 1950-03-07 Crucible Steel Co America Permanent magnets and alloys therefor

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