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Nondestructive Evaluation of a Cold Rolled and Thermally Aged Fe-Cu Alloy using a Micromagnetic Method
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We evaluated a variation of the magnetic properties of a Fe-1%Cu model alloy due to a cold rolling and a thermal aging. The thermal aging was conducted at 500○C with different ageing times in series. The hysteresis loops, Magnetic Barkhausen noise (BN) and Vickers micro hardness were measured for pre strained, strained, and thermal aged samples. The coercivity increased by a plastic strain and decreased by a thermal aging. The BN decreased in the pre strained and strained samples, but large changes were observed in the strained sample. These results were interpreted in terms of the domain wall motion signified by a change of the mean free path associated with micro internal stress and CRPs.
Title: Nondestructive Evaluation of a Cold Rolled and Thermally Aged Fe-Cu Alloy using a Micromagnetic Method
Description:
We evaluated a variation of the magnetic properties of a Fe-1%Cu model alloy due to a cold rolling and a thermal aging.
The thermal aging was conducted at 500○C with different ageing times in series.
The hysteresis loops, Magnetic Barkhausen noise (BN) and Vickers micro hardness were measured for pre strained, strained, and thermal aged samples.
The coercivity increased by a plastic strain and decreased by a thermal aging.
The BN decreased in the pre strained and strained samples, but large changes were observed in the strained sample.
These results were interpreted in terms of the domain wall motion signified by a change of the mean free path associated with micro internal stress and CRPs.
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