Decarburization and grain growth kinetics during the annealing of electrical steels
- Centro de Investigacion de Materials y Metrologia, Cordoba (Argentina)
Electrical steels are generally described as thin steel sheets of variable thickness (from 0.27 to 0.76 mm), whose function is to efficiently transport the magnetic flux in electrical equipments. The electromagnetic properties expected from these materials are low magnetic losses and a high permeability. It can be said that a cyclically magnetized-demagnetized material is not free of energy losses because a portion of the power, the loss, is irreversibly transformed into heat. These steels are usually produced in a partially processed condition and they reach their maximum magnetic potential during the final steps of manufacture at the user`s plant. Efficient control of the operations by which the sheets are submitted is essential to obtain the optimum steel yield in the magnetic circuit they are made for. In these operations a decarburization annealing heat treatment produces important effects such as removing punching residual tensions, decarburization to very low carbon content, ferritic grain growth and a favorable magnetic crystallographic texture.
- OSTI ID:
- 413256
- Journal Information:
- Scripta Materialia, Vol. 35, Issue 11; Other Information: PBD: 1 Dec 1996
- Country of Publication:
- United States
- Language:
- English
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