Magnetic properties of (Fe,Co)-B-Al-Nb with ultrafine grain structure

Conference · Tue Nov 01 04:00:00 EST 1994 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:6882929

Cho, Y S; Kim, Y B; Kim, C S ^[1]; Lee, K H; Kim, T K ^[2]

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1. Korea Research Inst. of Standards and Science, Taejon (Korea, Republic of)
2. Chungnam National Univ., Taejon (Korea, Republic of). Dept. of Metallurgical Engineering

The magnetic properties of (Fe,Co)-B-Al-Nb alloys prepared by rapid solidification process have been studied for the development of a new type Fe-based nanocrystalline alloy. Microstructure composed of ultrafine bcc Fe(Co) has been obtained directly from the rapid solidification by adding 10 at.% Al to (Fe[sub .85]Co[sub .15])[sub 80]B[sub 20] alloy. Furthermore, the addition of 2--6 at.% Nb to (Fe[sub .85]Co[sub .15])[sub 70]B[sub 20]Al[sub 10] alloy decreases the saturation magnetostriction below 5 ppm. Heat treatment of as-prepared alloys further improves its soft magnetic properties in high frequency range. (Fe[sub .85]Co[sub .15])[sub 70]B[sub 18]Al[sub 10]Nb[sub 2] alloy annealed at 400 C for 1 h shows the microstructure composed of ultrafine grains of about 8 nm and the most improved magnetic properties among the prepared alloys.

• OSTI ID: 6882929
• Report Number(s): CONF-940629--
• Conference Information: Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 30:6Pt1
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
ALUMINIUM ALLOYS
BORON ALLOYS
COBALT ALLOYS
DATA
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MAGNETIC PROPERTIES
METALLURGICAL EFFECTS
METALS
MICROSTRUCTURE
NIOBIUM
NIOBIUM ALLOYS
NUMERICAL DATA
PHYSICAL PROPERTIES
TRANSITION ELEMENTS