NDLI: Stress sensitivity of the A.C. magnetic properties of permendur after various heat treatments

Content Provider	IEEE Xplore Digital Library
Author	Moses, A. Thomas, B.
Copyright Year	1965
Abstract	Permendur in laminated form is often used in magnetic cores of machines and transformers where it might be subjected to mechanical stress. Measurements have been made to determine to what extent the a.c. iron loss and magnetostriction are affected by such linear stress. Magnetic properties were found to be dependent on heat treatment over the temperature range 400°C to 900°C. The loss of material annealed above 710°C rose steeply when compressive stress up to 100 MN/m²was applied, whereas under tension it first dropped slightly and then rose steadily as the stress was increased to 300 MN/m². The iron loss of material annealed below 710°C was high, but its stress sensitivity was low; there was a more significant drop in loss under tension and only a marginal increase under compression. The magnetostriction was found to decrease rapidly under tension and its stress sensitivity did not vary greatly with heat treatment.
Sponsorship	IEEE Magnetics Society
Starting Page	103
Ending Page	106
Page Count	4
File Size	346339
File Format	PDF
ISSN	00189464
Volume Number	12
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1976-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic properties Heat treatment Compressive stress Iron Magnetostriction Magnetic materials Annealing Magnetic cores Transformers Loss measurement
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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