Magnetostriction of stress-annealed Fe-Ga and Fe-Ga-Al alloys under compressive and tensile stress

被引：40
|
作者：
Wun-Fogle, M [1 ]
Restorff, JB
Clark, AE
机构：
[1] USN, Ctr Surface Warfare, Carderock Div, Bethesda, MD 20817 USA
[2] Clark Associates, Adelphi, MD 20783 USA
来源：
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES | 2006年 / 17卷 / 02期
关键词：
magnetostriction; Fe-Ga; transduction; stress annealing; Galfenol;
D O I：
10.1177/1045389X06056060
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The addition of Al and Ga to b.c.c. alpha-Fe increases the magnetostriction of Fe in the [100] direction (a factor of 12 for Fe81Ga19). The Fe-based magnetostrictive materials are machineable, mechanically tough, and saturate in fields of only a few hundred Oersteds, even under compressive loads up to -97 MPa. The effect of annealing single crystal Fe86.9Ga4.1Al9.0 and Fe86.9Ga8.7Al4.4 and polycrystalline Fe81.6Ga18.4 rods under compressive stress of 100 MPa for 10 min at temperatures between 625 and 750 degrees C were examined. After annealing, all samples showed nearly full performance at near-zero stresses and tensile stresses up to approximate to 20MPa, allowing tough wide-bandwidth magnetomechanical devices.
引用
收藏
页码：117 / 122
页数：6
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