Melt quenched Fe81Ga19 magnetostriction alloy

Acta Metall Sin

2008, Vol. 44

Issue (3): 361-364 DOI:

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Melt quenched Fe81Ga19 magnetostriction alloy

ZHANG Su; LIU Jinghua; JIANG Chengbao; XU Huibin

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ZHANG Su; LIU Jinghua; JIANG Chengbao; XU Huibin. Melt quenched Fe81Ga19 magnetostriction alloy. Acta Metall Sin, 2008, 44(3): 361-364 .

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Abstract Fe81Ga19 magnetostrictive alloy rods were prepared by quenching from melt into the GaIn cooling media. The optical microscopy results showed that fine columnar crystalline distributing in the transverse and longitudinal sections of Fe81Ga19 rod. The [110] texture along the rod was detected from X-ray pole figure. Combining thermal analysis (DSC、TG) and x-ray diffraction patterns (XRD), it could be determined that the alloy was mainly comprised of a disordered bcc A2 phase, which kept the same after heat treatment. A magnetic transition was monitored at about 690℃ for both the as-solidified and heat treated samples, consistent with the curie temperature of A2 phase. The saturation magnetostriction reached 66ppm without a pre-stress. The enhanced magnetostriction was obviously observed under a pre-stress. Magnetostriction rose with the increasing compressive stress in the experimental range from 10MPa to 50MPa. The saturation magnetostriction achieved up to 115ppm under a 50MPa compressive pre-stress.

Key words: Fe-Ga alloy melt quenched magnetostriction

Received: 31 July 2007

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	ZHANG Su
	LIU Jinghua
	JIANG Chengbao
	XU Huibin

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2008/V44/I3/361

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