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Microstructure and magnetostriction in rare-earth-iron alloys (1988)

Westwood, P. ; Abell, J. S. ; Clarke, I. H. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 64 (1988), S. 5414-5416

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: The microstructure of the magnetostrictive alloy terfenol, Tb0.27Dy0.73Fex, has been studied in the range 1.55≤x≤2.30. Image analysis has confirmed and quantified observations of the reabsorption of the rare-earth phase into the matrix after annealing, implying the existence of a solid solubility range. Similar measurements have demonstrated the growth of the primary RFe3 phase for all alloys with x〉2.00. Eutectic and peritectic temperatures of 892 and 1239 °C, respectively, have been determined by differential thermal analysis (DTA) for this composition range. The homogeneous, elongated grain structure induced by vertical float zoning increases k33 and allows the development of a uniform static strain throughout the rod.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.342387

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